黄苞南星中的葡萄糖脑苷脂

时间:2022-06-08 08:48:19

【摘要】黄苞南星Arisaema flavum (Forsk.) Schott为天南星科天南星属多年生草本。其块茎、花以及果实均可入药,用于退烧、杀虫、祛胃风、消痞块[1]。黄苞南星在藏医药中作为“踏贵”的正...

黄苞南星中的葡萄糖脑苷脂

[摘要] 采用硅胶、Sephadex LH-20和反相(C-18)柱色谱等方法研究黄苞南星块茎的化学成分。根据理化性质和波谱学数据与已知化合物对照鉴定了17个葡萄糖脑苷脂类化合物,分别是1-O-β-D-glucopyranosyl-(2S, 3R, 4E, 8E)-2-[(2′(R)-acetoxyoctadecanoyl)amido]-4, 8-octadecadiene-1, 3-diol (1),2′-O-acetylsoyacerebroside I (2),1-O-(β-D-glucopyranosyl)-(2S, 3R, 4E, 13Z)-2-[(2′R)-2-hydroxytetradecanoylamino]-1, 3-dihydroxy-4, 13-docosadiene (3),(2S, 3R, 4E, 8E)1-(β-D-glucopyranosyl)-3-hydroxy-2-[(R)-2′-hydroxyhexadecanoyl]amino-9-methyl-4, 8-heptadecadiene (4),(2S, 3R, 4E, 8E)1-(β-D-glucopyranosyl)-3-hydroxy-2-[(R)-2′-hydroxyhexadecanoyl]amino-9-methyl-4, 8-octadecadiene (5),(2S, 3R, 4E, 8E)1-(β-D-glucopyranosyl)-3-hydroxy-2-[(R)-2′-hydroxypalmitoyl]amino-9-methyl-4, 8-octadecadiene (6),(2S, 3R, 4E, 8E)1-(β-D-glucopyranosyl)-3-hydroxy-2-[(R)-2′-hydroxyoctadecanoyl]amino-9-methyl-4, 8-octadecadiene (7),1-O-(β-D-glucopyranosyl)-(2S, 3R, 4E, 8E)-2-[(R)-2′-hydroxytetradecanoylamino]-4, 8-octadecadiene-1, 3-diol (8),1-O-(β-D-glucopyranosyl)-(2S, 3R, 4E, 8E)-2-[(R)-2′-hydroxypentadecanoylamino]-4, 8-octadecadiene-1, 3-diol (9),1-O-(β-D-glucopyranosyl)-(2S, 3R, 4E, 8E)-2-[(R)-2′-hydroxyhexadecanoylamino]-4, 8-octadecadiene-1, 3-diol (10),1-O-(β-D-glucopyranosyl)-(2S, 3R, 4E, 8Z)-2-[(R)-2′-hydroxyhexadecanoylamino]-4, 8-octadecadiene-1, 3-diol (11),1-O-(β-D-glucopyranosyl)-(2S, 3R, 4E, 8E)-2-[(R)-2′-hydroxyoctadecanoylamino]-1, 3-hydroxy-4, 8-octadecadiene (12),1-O-(β-D-glucopyranosyl)-(2S, 3R, 4E)-2-[(R)-2′-hydroxytetracosanoylamino]-1, 3-hydroxy-4-hexadecane (13),1-O-(β-D-glucopyranosyl)-(2S, 3R, 4R, 8Z)-2N-[(2′R)-2′-hydroxytetracosanoyl]-8-(Z)-octadecene-1, 3, 4-triol (14),1-O-(β-D-glucopyranosyl)-(2S, 3S, 4E, 8E)-2N-[(2′R)-2′-hydroxyhexadecanoyl]-4-(E), 8-(Z)-octadecadiene-1, 3-diol (15),typhoniside A (16),1-O-β-D-glucopyranosyl-(2S, 3R, 8E)-2-[(2′R)-2-hydroxypalmitoylamino]-8-octadecene-1, 3-diol (17)。其中化合物1和2为首次从该植物中分离,其余化合物则均为首次从该属植物中分离得到。

[关键词] 天南星属;黄苞南星;葡萄糖脑苷脂

[Abstract] Silica gel, Sephadex LH-20, and reverse phase (C-18) column chromatography were used for the research of chemical constituents occurred in Arisaema flavum(Forsk.) Schott. The structures were elucidated by comparison physico-chemical properties and NMR spectroscopic data with those of known compounds. Seventeen cerebrosides were identified as 1-O-β-D-glucopyranosyl-(2S, 3R, 4E, 8E)-2-[(2′(R)-acetoxyoctadecanoyl)amido]-4, 8-octadecadiene-1, 3-diol (1), 2′-O-acetylsoyacerebroside I (2), 1-O-(β-D-glucopyranosyl)-(2S, 3R, 4E, 13Z)-2-[(2′R)-2-hydroxytetradecanoylamino]-1, 3-dihydroxy-4, 13-docosadiene (3), (2S, 3R, 4E, 8E)1-(β-D-glucopyranosyl)-3-hydroxy-2-[(R)-2′-hydroxyhexadecanoyl]amino-9-methyl-4, 8-heptadecadiene (4), (2S, 3R, 4E, 8E)1-(β-D-glucopyranosyl)-3-hydroxy-2-[(R)-2′-hydroxyhexadecanoyl]amino-9-methyl-4, 8-octadecadiene (5), (2S, 3R, 4E, 8E)1-(β-D-glucopyranosyl)-3-hydroxy-2-[(R)-2′-hydroxypalmitoyl]amino-9-methyl-4, 8-octadecadiene (6), (2S, 3R, 4E, 8E)1-(β-D-glucopyranosyl)-3-hydroxy-2-[(R)-2′-hydroxyoctadecanoyl]amino-9-methyl-4, 8-octadecadiene (7), 1-O-(β-D-glucopyranosyl)-(2S, 3R, 4E, 8E)-2-[(R)-2′-hydroxytetradecanoylamino]-4, 8-octadecadiene-1, 3-diol (8), 1-O-(β-D-glucopyranosyl)-(2S, 3R, 4E, 8E)-2-[(R)-2′-hydroxypentadecanoylamino]-4, 8-octadecadiene-1, 3-diol (9), 1-O-(β-D-glucopyranosyl)-(2S, 3R, 4E, 8E)-2-[(R)-2′-hydroxyhexadecanoylamino]-4, 8-octadecadiene-1, 3-diol (10), 1-O-(β-D-glucopyranosyl)-(2S, 3R, 4E, 8Z)-2-[(R)-2′-hydroxyhexadecanoylamino]-4, 8-octadecadiene-1, 3-diol (11), 1-O-(β-D-glucopyranosyl)-(2S, 3R, 4E, 8E)-2-[(R)-2′-hydroxyoctadecanoylamino]-1, 3-hydroxy-4, 8-octadecadiene (12), 1-O-(β-D-glucopyranosyl)-(2S, 3R, 4E)-2-[(R)-2′-hydroxytetracosanoylamino]-1, 3-hydroxy-4-hexadecane (13), 1-O-(β-D-glucopyranosyl)-(2S, 3R, 4R, 8Z)-2N-[(2′R)-2′-hydroxytetracosanoyl]-8-(Z)-octadecene-1, 3, 4-triol (14), 1-O-(β-D-glucopyranosyl)-(2S, 3S, 4E, 8E)-2N-[(2′R)-2′-hydroxyhexadecanoyl]-4-(E), 8-(Z)-octadecadiene-1, 3-diol (15), typhoniside A (16), and 1-O-β-D-glucopyranosyl-(2S, 3R, 8E)-2-[(2′R)-2-hydroxypalmitoylamino]-8-octadecene-1, 3-diol (17). Compounds 1 and 2 were isolated from the plant for the first time, while the remained compounds were isolated from the genus Arisaema for the first time.

[Key words] Arisaema;Arisaema flavum;cerebroside

doi:10.4268/cjcmm20161316

黄苞南星Arisaema flavum (Forsk.) Schott为天南星科天南星属多年生草本。其块茎、花以及果实均可入药,用于退烧、杀虫、祛胃风、消痞块[1]。黄苞南星在藏医药中作为“踏贵”的正品入药,具有驱虫、消肿散结、解毒和祛腐肉等功效[2]。黄苞南星生长在海拔较高的,为当地常见杂草,同时四川西部、云南西北部也有分布,资源极为丰富[3]。然而,黄苞南星的化学成分尚不明确,也就无法制定科学、规范的质量监控标准,严重制约了其规范化和标准化进程。本研究以明确黄苞南星化学成分为目的,以期为其规范化、标准化用药提供物质基础和实验依据。在本研究中,共分离鉴定出17个葡萄糖脑苷脂类化合物。除化合物1和2为首次从该植物中分离外,其余化合物均为首次从该属植物中分离。本研究虽没有从该植物中分离出新的葡萄糖脑苷脂类化合物,但分布于该植物的葡萄糖脑苷脂类成分的结构多样性可见一斑。

1 材料

旋光仪为申光SGW-1自动旋光仪;质谱(ESI-MS)则使用Finnigan-LCQDECA;核磁共振为Agilent, 400 MHz,以DMSO-d6和pyridine-d4为溶剂,溶剂信号分别以δH/C= 2.50/39.5,8.74/150.4为内标;薄层色谱(TLC)硅胶(GF254)和柱色谱硅胶(200~300目,青岛海洋化工有限公司)用于柱色谱。反相色谱柱(Cosmosil 75,C18-OPN)为Nacalai Tesque 公司产品。葡聚糖凝胶Sephadex LH-20购自当地商。TLC显色剂用硫酸香草醛试剂[香草醛0.5 g溶于100 mL硫酸-乙醇(1∶1)溶液]。实验室所用的有机溶剂以及其他耗材等,从成都金牛化工试剂公司购买。

黄苞南星块茎于2013年11月购自荷花池中药材专业市场,由西南民族大学少数民族药物研究所王晓玲教授鉴定为A.flavum。植物标本现存放在西南民族大学少数民族药物研究所标本馆,序号为ZY201401。

2 提取与分离

黄苞南星(5 kg)粉碎(5~10目),用乙醇室温浸提3次(10 L/次,每次7 d),合并后减压浓缩回收溶剂得浸膏300 g。将其分散于水中,依次用乙酸乙酯和正丁醇萃取。真空浓缩回收乙酸乙酯以及正丁醇,分别得到乙酸乙酯取物24 g和正丁醇萃取物55 g。乙酸乙酯萃取物经硅胶柱色谱(Φ 8 cm×60 cm),氯仿-甲醇(20∶1~1∶1,10 L)梯度洗脱,TLC检测合并相同组分得到A~H共8个部分,组分F继续用硅胶柱色谱(Φ 4 cm×40 cm),薄层板检测合并为FA~FE共5个部分,流分FB经反相色谱(C-18),甲醇-水(2∶8~10∶0)洗脱得到化合物1(5.0 mg),2 (4.2 mg),4 (5.4 mg);流分FD经硅胶柱色谱(Φ 4 cm×50 cm),氯仿-甲醇(10∶1~1∶1)梯度洗脱,得化合物3(8.0 mg)和FDA-FDE共5个部分。FDC经反相柱色谱,甲醇-水(2∶8~10∶0)洗脱得到化合物5(4.5 mg),6 (5.8 mg),7 (3.6 mg),10(5.2 mg);组分FDE经反相柱色谱,甲醇-水(2∶8~10∶0)洗脱得到化合物8(3.8 mg),9 (4.6 mg),11 (5.0 mg);组分G继续用硅胶柱色谱(Φ 4 cm×40 cm),薄层板检测合并为GA~GF共6个部分,组分GA经Sephadex LH-20,氯仿-甲醇(1∶1)洗脱得到化合物12(3.3 mg),13 (6.2 mg);组分GC经反相柱色谱,甲醇-水(1∶9~10∶0)洗脱得到化合物15(6.3 mg);组分GD经反相柱色谱,甲醇-水(1∶9~10∶0)洗脱得到化合物16(4.5 mg);组分GE经反相柱色谱,甲醇-水(1∶9~10∶0)洗脱得到化合物14(3.6 mg),17 (8.2 mg)。

3 结构鉴定

化合物1 白色粉末,TLC紫外灯254,365 nm均无吸收,喷洒硫酸-香草醛显色剂加热后呈红色。[α]=+9.3 (c 0.15,pyridine), ESI-MS m/z 806 [M + Na]+。1H-NMR (pyridine-d5,400 MHz)δ: 8.44 (1H,d,J=8.1 Hz,NH),6.05 (1H,dd,J=15.5,5.6 Hz,H-4),5.89 (1H,dt,J=15.4,6.3 Hz,H-5),5.56 (1H,dd,J=7.6,4.9 Hz,H-2′),5.51 (2H,m,H-8,9),4.94 (1H,d,J=7.8 Hz,H-1″),4.90 (1H,dd,J=10.8,3.0 Hz,H-1a),4.76 (2H,d,J=3.9 Hz,H-2,3),4.56 (1H,dd,J=11.3,1.5 Hz,H-6″a),4.40 (1H,dd,J=11.7,5.2 Hz,H-6″b),4.25 (2H,d,J=8.5 Hz,H-3″,4″),4.11 (1H,dd,J=16.6,8.4 Hz,H-1b),4.07 (1H,d,J=8.2 Hz,H-2″),2.23 (3H,s,COCH3),0.88 (6H,t,J=6.5 Hz,CH3)。13C-NMR (pyridine-d5,100 MHz) δ: 171.1 (C-1′),171.0 (COOCH3),132.5 (C-4),132.9 (C-5),131.5,130.4 (C-8,9),106.3 (C-1″),79.1 (C-5″),79.0 (C-3″),75.8 (C-2″),75.4 (C-2′),72.6 (C-3),72.1 (C-4″),70.6 (C-1),63.1 (C-6″),55.3 (C-2),33.4 (C-6,10),33.3 (C-7),33.2 (C-3),26.1 (C-4′),21.5 (COCH3),14.8 (2×CH3)。波谱数据与文献[4-5]相符。因此,化合物1被鉴定为1-O-β-D-glucopyranosyl-(2S,3R,4E,8E)-2-[(2′(R)-acetoxyoctadecanoyl)amido]-4,8-octadecadiene-1,3-diol。

化合物2 白色粉末,TLC紫外灯254,365 nm均无吸收,喷洒硫酸-香草醛显色剂加热后呈红色。[α]=+6.1 (c 0.10,pyridine),ESI-MS m/z 778 [M + Na]+。1H-NMR (DMSO-d6,400 MHz) δ: 7.52 (1H,d,J=9.2 Hz,NH),5.59 (1H,d,J=15.2 Hz,H-4),5.41 (3H,m,H-5,8,9),4.03 (2H,d, J=7.8 Hz,H-1a,1″),3.97 (1H,m,H-3),3.75 (1H,m,H-2),3.67,3.35(2H,m,H-6″a,6″b),3.30 (1H,m,H-1b),2.07 (3H,s,COCH3),0.85 (6H,t,J=6.4 Hz,2×CH3)。13C-NMR (DMSO-d6,100 MHz) δ: 170.2 (C-1′),169.4 (COOCH3),131.8 (C-4),131.2 (C-5),130.6 (C-8),129.9 (C-9),104.2 (C-1″),77.3 (C-3″),76.7 (C-5″),73.9 (C-2″),73.9 (C-2′),70.6 (C-3),70.5 (C-4″),69.0 (C-1),61.5 (C-6″),53.5 (C-2),32.5 (C-6),32.4 (C-7),32.2 (C-10),32.0 (C-3),25.0 (C-4′),21.2 (COCH3),14.3 (2×CH3)。波谱数据与文献[5-7]一致,故鉴定化合物为2′-O-acetylsoyacerebroside I。

化合物3 白色粉末,TLC紫外灯254,365 nm均无吸收,喷洒硫酸-香草醛显色剂加热后呈红色。[α]=+8.2 (c 0.18,pyridine),ESI-MS m/z 764 [M + Na]+。1H-NMR (pyridine-d5,400 MHz) δ: 8.34 (1H,d,J=8.1 Hz,NH ),5.97 (1H,m,H-4),5.90 (1H,m,H-5),5.48 (1H,m,H-13),4.90 (1H,d,J=8.2 Hz,H-1″),4.35 (1H,dd,J=12.4,5.0 Hz,H-6″a),4.52 (1H,m,H-6″b),4.03 (1H,dd,J=8.3,7.9 Hz,H-2″),0.88 (6H,t,J=6.6 Hz,2×CH3)。13C-NMR (pyridine-d5,100 MHz) δ: 176.0 (C-1′),132.9 (C-5),132.0 (C-4),130.3 (C-13),130.4 (C-14),105.7 (C-1″),78.7 (C-5″),78.5 (C-3″),75.0 (C-2″),72.8 (C-2′),72.5 (C-3),71.6 (C-4″),70.0 (C-1),63.0 (C-6″),54.7 (C-2),35.9 (C-3′),33.0 (C-6),14.3 (2×CH3)。波谱数据与文献[8]一致,故鉴定化合物为1-O-(β-D-glucopyranosyl)-(2S,3R,4E,13Z)-2-[(2′R)-2-hydroxytetradecanoylamino]-1,3-dihydroxy-4,13-docosadiene (asteriacerebroside G)。

化合物4 白色粉末,TLC紫外灯254,365 nm均无吸收,喷洒硫酸-香草醛显色剂加热后呈红色。[α]=+6.6 (c 0.17,pyridine),ESI-MS m/z 736 [M + Na]+。 1H-NMR (pyridine-d5,400 MHz) δ: 8.35 (1H,d,J=8.9 Hz,NH ),5.97 (1H,dd,J=15.0,5.4 Hz,H-5),5.95 (1H,dt,J=15.0 Hz,H-4),5.25 (2H,m,H-8,9),4.90 (1H,d,J=8.1 Hz,H-1″),4.58 (1H,dd,J=7.8,3.2 Hz,H-2′),4.34 (1H,dd,J=11.8,3.4 Hz,H-6″a),4.22 (1H,dd,J=9.3 Hz,H-3″),4.00 (1H,dd,J=9.0,8.0 Hz,H-2″),1.59 (3H,s,CH3-18),0.85 (6H,t,J=6.7 Hz,2×CH3)。 13C-NMR (pyridine-d5,100 MHz) δ: 175.5 (C-1′),135.9(C-9),132.6 (C-4),132.0 (C-5),124.5 (C-8),105.6 (C-1″),78.7 (C-5″),78.5 (C-3″),75.2 (C-2″),72.6 (C-2′),72.5 (C-3),71.6 (C-4″),70.0 (C-1),62.9 (C-6″),54.7 (C-2),40.0 (C-10),35.6 (C-3′),33.0 (C-6),32.3 (C-7),16.5 (CH3-18),14.3 (2×CH3)。波谱数据与文献[9]一致,故鉴定化合物为(2S,3R,4E,8E)1-O-(β-D-glucopyranosyl)-3-hydroxy-2-[(R)-2′-hydroxyhexadecanoyl]amino-9-methyl-4,8-heptadecadiene。

化合物5 白色粉末,TLC紫外灯254,365 nm均无吸收,喷洒硫酸-香草醛显色剂加热后呈红色。[α]=+7.2 (c 0.21,pyridine),ESI-MS m/z 764 [M + Na]+。 1H-NMR (pyridine-d5,400 MHz) δ: 8.35 (1H,d,J=8.0 Hz,NH ),6.00 (1H,dd,J=15.7,6.0 Hz,H-5),5.93 (1H,dt,J=15.7 Hz,H-4),4.92 (1H,d,J=8.2 Hz,H-1″),4.72 (1H,dd,J=12.0,5.9 Hz,H-1a),4.58 (1H,d,J=8.0 Hz,H-2′),4.50 (1H,dd,J=12.2,3.7 Hz,H-6″a),4.34 (1H,dd,J=12.0,5.4 Hz,H-6″b),4.24 (1H,dd,J=12.3,6.4 Hz,H-1b),1.59 (3H,s,H3-18),0.85 (6H,t,J=6.9 Hz,2×CH3)。 13C-NMR (pyridine-d5,100 MHz) δ: 175.5 (C-1′),135.7,(C-9),132.0 (C-4),131.8 (C-5),124.1 (C-8),105.6 (C-1″),78.5 (C-5″),78.5 (C-3″),75.0 (C-2″),72.6 (C-2′),72.5 (C-3),71.6 (C-4″),70.0 (C-1),62.5 (C-6″),54.6 (C-2),40.1 (C-10),35.6 (C-3′),33.0 (C-6),28.5 (C-7),16.0 (CH3-18),14.3 (2×CH3)。波谱数据与文献[10]一致,故鉴定化合物为(2S,3R,4E,8E)1-(β-D-glucopyranosyl)-3-hydroxy-2-[(R)-2′-hydroxyhexadecanoyl]amino-9-methyl-4,8-octadecadiene。

化合物6 白色粉末,TLC紫外灯254,365 nm均无吸收,喷洒硫酸-香草醛显色剂加热后呈红色。[α]=+7.4 (c 0.19,pyridine),ESI-MS m/z 750 [M + Na]+。 1H-NMR (pyridine-d5,400 MHz) δ: 8.35 (1H,d,J=8.5 Hz,NH ),5.98 (1H,dt,J=15.6 Hz,H-5),5.93 (1H,dd,J=15.6,7.0 Hz,H-4),5.25 (2H,m,H-8,9),4.92 (1H,d,J=7.5 Hz,H-1″),4.70 (1H,dd,J=10.4,5.9 Hz,H-1a),4.58 (1H,m,H-2′),4.50 (1H,d,J=12.2 Hz,H-6″a),4.34 (1H,dd,J=12.0,6.4 Hz,H-6″b),4.22 (1H,m,H-1b),1.59 (3H,s,H3-18),0.87 (6H,t,J=6.9 Hz,2×CH3)。13C-NMR (pyridine-d5,100 MHz) δ: 175.5 (C-1′),135.7,(C-9),132.4 (C-4),131.8 (C-5),124.1 (C-8),105.6 (C-1″),78.4 (C-5″),78.4 (C-3″),75.0 (C-2″),72.5 (C-2′),72.4 (C-3),71.6 (C-4″),70.0 (C-1),62.9 (C-6″),54.7 (C-2),40.0 (C-10),35.6 (C-3′),33.0 (C-6),32.1 (C-7,16),28.4 (C-11),28.2 (C-14′),23.0 (C-17,15′),16.3 (CH3-19),14.3 (2×CH3)。波谱数据与文献[10-11]一致,故鉴定化合物为(2S,3R,4E,8E)1-(β-D-glucopyranosyl)-3-hydroxy-2-[(R)-2′-hydroxypalmitoyl]amino-9-methyl-4,8-octadecadiene (cerebroside B)。

化合物7 白色粉末,TLC紫外灯254,365 nm均无吸收,喷洒硫酸-香草醛显色剂加热后呈红色。[α]=+5.9 (c 0.25,pyridine),ESI-MS m/z 780 [M + Na]+。 1H-NMR (pyridine-d5,400 MHz) δ: 8.34 (1H,d,J=8.5 Hz,NH),5.98 (1H,dt,J=15.0 Hz,H-5),5.93 (1H,dd,J=15.0,6.1 Hz,H-4),5.24 (2H,m,H-8,9),4.87 (1H,d,J=7.5 Hz,H-1″),4.70 (1H,dd,J=10.5,5.6 Hz,H-1a),4.58 (1H,m,H-2′),4.48 (1H,d,J=12.2 Hz,H-6″),1.59 (3H,s,H3-18),0.84 (6H,t,J=6.7 Hz,2×CH3)。13C-NMR (pyridine-d5,100 MHz) δ: 175.5 (C-1′),135.6(C-9),132.3 (C-4),131.7 (C-5),124.0 (C-8),105.5 (C-1″),78.5 (C-5″),78.5 (C-3″),74.9 (C-2″),72.3 (C-2′),72.3 (C-3),71.4 (C-4″),69.9 (C-1),62.7 (C-6″),54.5 (C-2),39.7 (C-10),35.6 (C-3′),32.9 (C-6),32.1 (C-7,16),28.4 (C-11),28.2 (C-16′),22.8 (C-17,17′),16.0 (CH3-19),14.0 (2×CH3)。波谱数据与文献[10-11]一致,故鉴定化合物为(2S,3R,4E,8E)1-(β-D-glucopyranosyl)-3-hydroxy-2-[(R)-2′-hydroxyoctadecanoyl]amino-9-methyl-4,8-octadecadiene (cerebroside D)。

化合物8 白色粉末,TLC紫外灯254,365 nm均无吸收,喷洒硫酸-香草醛显色剂加热后呈红色。[α]=+5.5 (c 0.14,pyridine),ESI-MS m/z 708 [M + Na]+。1H-NMR (pyridine-d5,400 MHz) δ: 8.30 (1H,d,J=8.4 Hz,NH),6.01 (1H,dd,J=15.3,5.4 Hz,H-4),5.93 (1H,dt,J=15.3 Hz,H-5),4.90 (1H,d,J=7.8 Hz,H-1″),4.76 (1H,dd,J=11.7,3.8 Hz,H-1b),4.58 (1H,dd,J=8.3,4.1 Hz,H-2′),4.50 (1H,dd,J=12.3,3.1 Hz,H-6″b),4.35 (1H,dd,J=12.2,5.0 Hz,H-6″a),4.02 (1H,d,J=7.8,H-2″),0.89 (6H,t,J=6.7 Hz,2×CH3)。13C-NMR (pyridine-d5,100 MHz) δ: 175.7 (C-1′),132.3 (C-5),132.1 (C-4),131.0 (C-9),130.1 (C-8),105.5 (C-1″),78.5 (C-5″),78.5 (C-3″),75.0 (C-2″),72.6 (C-2′),72.3 (C-3),71.6 (C-4″),70.1 (C-1),62.7 (C-6″),54.5 (C-2),33.0 (C-6),32.9 (C-10),32.0 (C-7),14.3 (2×CH3)。波谱数据与文献[4]一致,故鉴定化合物为1-O-(β-D-glucopyranosyl)-(2S,3R,4E,8E)-2-[(R)-2′-hydroxytetradecanoylamino]-4,8-octadecadiene-1,3-diol。

化合物9 白色粉末,TLC紫外灯254,365 nm均无吸收,喷洒硫酸-香草醛显色剂加热后呈红色。[α]=+6.2 (c 0.13,pyridine),ESI-MS m/z 722 [M + Na]+。 1H-NMR (pyridine-d5,400 MHz) δ: 8.34 (1H,d,J=8.3 Hz,NH),6.02 (1H,dd,J=15.4,5.8 Hz,H-4),5.92 (1H,dt,J=15.4 Hz,H-5),5.48 (2H,m,H-8,9),4.92 (1H,d,J=7.9 Hz,H-1″),4.78 (1H,m,H-1b),4.58 (1H,d,J=8.4,4.8 Hz,H-2′),4.51 (1H,dd,J=12.3,3.5 Hz,H-6″b),4.37 (1H,dd,J=12.2,5.3 Hz,H-6″a),4.03 (1H,d,J=7.9 Hz,H-2″),0.88 (6H,t,J=6.7 Hz,2×CH3)。13C-NMR (pyridine-d5,100 MHz) δ: 175.6 (C-1′),132.0 (C-5),131.9 (C-4),131.1 (C-9),130.0 (C-8),105.6 (C-1″),78.5 (C-5″),78.5 (C-3″),75.0 (C-2″),72.4 (C-2′),72.3 (C-3),71.6 (C-4″),69.9 (C-1),62.7 (C-6″),54.6 (C-2),32.9 (C-6),32.9 (C-10),32.1 (C-7),14.3 (2×CH3)。波谱数据与文献[4]一致,故鉴定化合物为1-O-(β-D-glucopyranosyl)-(2S,3R,4E,8E)-2-[(R)-2′-hydroxypentadecanoylamino]-4,8-octadecadiene-1,3-diol。

化合物10 白色粉末,TLC紫外灯254,365 nm均无吸收,喷洒硫酸-香草醛显色剂加热后呈红色。[α]=+6.5 (c 0.23,pyridine),ESI-MS m/z 726 [M + Na]+。1H-NMR (pyridine-d5,400 MHz) δ: 8.39 (1H,d,J=8.1 Hz,NH),6.03 (1H,dd,J=15.1,5.0 Hz,H-4),5.94 (1H,dt,J=15.0 Hz,H-5),5.48 (2H,m,H-8,9),4.93 (1H,d,J=8.0 Hz,H-1″),4.51 (1H,dd,J=12.5,3.8 Hz,H-6″b),4.36 (1H,dd,J=12.4,5.0 Hz,H-6″a),4.02 (1H,d,J=7.8 Hz,H-2″),0.89 (6H,t,J=6.9 Hz,2×CH3)。13C-NMR (pyridine-d5,100 MHz) δ: 175.6 (C-1′),132.0 (C-5),131.9 (C-4),131.1 (C-9),130.0 (C-8),105.6 (C-1″),78.5 (C-5″),78.5 (C-3″),75.0 (C-2″),72.4 (C-2′),72.3 (C-3),71.6 (C-4″),69.9 (C-1),62.7 (C-6″),54.6 (C-2),33.0 (C-6),32.9 (C-10),32.1 (C-7),14.2 (2×CH3)。波谱数据与文献[7]一致,故鉴定化合物为1-O-(β-D-glucopyranosyl)-(2S,3R,4E,8E)-2-[(R)-2′-hydroxyhexadecanoylamino]-4,8-octadecadiene-1,3-diol (soyacerebroside I)。

化合物11 白色粉末,TLC紫外灯254,365 nm均无吸收,喷洒硫酸-香草醛显色剂加热后呈红色。[α]=+7.5 (c 0.25,pyridine),ESI-MS m/z 726 [M + Na]+。 1H-NMR (pyridine-d5,400 MHz) δ: 8.40 (1H,d,J=8.3 Hz,NH ),6.02 (1H,dd,J=15.0,5.3 Hz,H-4),5.92 (1H,dt,J=15.0 Hz,H-5),5.47 (2H,m,H-8,9),4.92 (1H,d,J=7.9 Hz,H-1″),4.52 (1H,dd,J=12.2,4.4 Hz,H-6″b),4.35 (1H,dd,J=12.1,5.4 Hz,H-6″a),4.00 (1H,d,J=7.9 Hz,H-2″),0.87 (6H,t,J=6.9 Hz,2×CH3)。 13C-NMR (pyridine-d5,100 MHz) δ: 175.6 (C-1′),132.0 (C-5),131.9 (C-4),131.1 (C-9),130.0 (C-8),105.5 (C-1″),78.5 (C-5″),78.5 (C-3″),75.0 (C-2″),72.4 (C-2′),72.3 (C-3),71.6 (C-4″),69.9 (C-1),62.7 (C-6″),54.6 (C-2),33.0 (C-6),27.4 (C-10),27.3 (C-7),14.2 (2×CH3)。波谱数据与文献[7]一致,故鉴定化合物为1-O-(β-D-glucopyranosyl)-(2S,3R,4E,8Z)-2-[(R)-2′-hydroxyhexadecanoylamino]-4,8-octadecadiene-1,3-diol (soyacerebroside Ⅱ)。

化合物12 白色粉末,TLC紫外灯254,365 nm均无吸收,喷洒硫酸-香草醛显色剂加热后呈红色。[α]=+6.7 (c 0.16,pyridine),ESI-MS m/z 764 [M + Na]+。 1H-NMR (pyridine-d5,400 MHz) δ: 8.32 (1H,d,J=8.5 Hz,NH ),6.00 (1H,dd,J=15.4,5.6 Hz,H-4),5.93 (1H,dt,J=15.4 Hz,H-5),5.47 (2H,m,H-8,9),4.93 (1H,d,J=7.8 Hz,H-1″),4.49 (1H,dd,J=12.0,4.8 Hz,H-6″b),4.36 (1H,dd,J=12.1,5.0 Hz,H-6″a),0.89 (6H,t,J=6.7 Hz,2×CH3)。 13C-NMR (pyridine-d5,100 MHz) δ: 175.6 (C-1′),132.3 (C-5),131.0 (C-4),131.0 (C-9),129.8 (C-8),105.5 (C-1″),78.5 (C-5″),78.5 (C-3″),75.2 (C-2″),72.5 (C-2′),72.3 (C-3),71.6 (C-4″),69.9 (C-1),62.8(C-6″),54.6 (C-2),33.0 (C-6),32.8 (C-7),32.8 (C-10),14.3 (2×CH3)。波谱数据与文献[12]一致,故鉴定化合物为1-O-(β-D-glucopyranosyl)-(2S,3R,4E,8E)-2-[(R)-2′-hydroxyoctadecanoylamino]-1,3-hydroxy-4,8-octadecadiene。

化合物13 白色粉末,TLC紫外灯254,365 nm均无吸收,喷洒硫酸-香草醛显色剂加热后呈红色。[α]=+5.6 (c 0.24,pyridine),ESI-MS m/z 822 [M + Na]+。 1H-NMR (pyridine-d5,400 MHz) δ: 8.30 (1H,d,J=8.9 Hz,NH ),6.03 (1H,dd,J=15.4,5.0 Hz,H-4),5.93 (1H,m,H-5),4.92 (1H,d,J=7.8 Hz,H-1″),4.48 (1H,dd,J=12.5,4.8 Hz,H-6″b),4.36 (1H,m,H-6″a),0.89 (6H,t,J=6.7 Hz,2×CH3)。 13C-NMR (pyridine-d5,100 MHz) δ: 175.6 (C-1′),132.9 (C-5),131.6 (C-4),105.7 (C-1″),78.5 (C-5″),78.5 (C-3″),75.0 (C-2″),72.5 (C-2′),72.4 (C-3),71.6 (C-4″),69.9 (C-1),62.9(C-6″),54.6 (C-2),14.3 (2×CH3)。波谱数据与文献[12]一致,故鉴定化合物为1-O-(β-D-glucopyranosyl)-(2S,3R,4E)-2-[(R)-2′-hydroxy tetracosanoylamino]-1,3-hydroxy-4-hexadecene。

化合物14 白色粉末,TLC紫外灯254,365 nm均无吸收,喷洒硫酸-香草醛显色剂加热后呈红色。[α]=+6.0 (c 0.15,pyridine),ESI-MS m/z 866 [M + Na]+。 1H-NMR (pyridine-d5,400 MHz) δ: 8.55 (d,J=9.2 Hz,1H,NH ),7.58 (1H,br s,OH-2′),6.80 (1H,br s,OH-3),6.41 (1H,br s,OH-6″),6.01 (1H,br s,OH-4′),5.47 (4H,m,H-8,9,15′,16′),4.94 (1H,d,J=7.8 Hz,H-1″),4.71 (1H,dd,J=11.4,6.3 Hz,H-1a),4.58 (1H,dd,J=8.2,3.1 Hz,H-2′),4.50 (1H,dd, J=12.2,3.8 Hz,H-6″a),4.35 (1H,dd, J=12.0,3.2 Hz,H-6″b),4.30 (1H,d,J=5.0 Hz,H-3),0.86 (6H,t,J=6.9 Hz,2×CH3)。 13C-NMR (pyridine-d5,100 MHz) δ: 175.7 (C-1′),130.9 (C-8),130.1 (C-4),130.0 (C-15′,16′),105.5 (C-1″),78.3 (C-5″),78.1 (C-3″),76.0 (C-3),75.0 (C-2″),72.7 (C-2′),72.5 (C-4),71.0 (C-4″),70.5 (C-1),62.3 (C-6″),51.6 (C-2),35.8 (C-3′),34.3 (C-5),32.5 (C-16),27.9 (C-7),27.9 (C-10),23.6 (C-17),14.5 (2×CH3)。波谱数据与文献[12]一致,故鉴定化合物为1-O-(β-D-glucopyranosyl)-(2S,3R,4R,8Z)-2N-[(2′R)-2′-hydroxytetracosanoyl]-8-(Z)-octadecene-1,3,4-triol。

化合物15 白色粉末,TLC紫外灯254,365 nm均无吸收,喷洒硫酸-香草醛显色剂加热后呈红色。[α]=+5.9 (c 0.10,pyridine),ESI-MS m/z 736 [M + Na]+。1H-NMR (pyridine-d5,400 MHz) δ: 8.40 (1H,d,J=9.2 Hz,NH),7.73 (1H,br s,OH-2′),6.97 (1H,br s,OH-3),6.58 (1H,br s,OH-6″),5.98 (1H,dd,J=15.4,6.3 Hz,H-4),5.91 (1H,dt,J=15.4,5.3 Hz,H-5),5.42 (2H,t,J=5.1 Hz,H-8,9),4.95 (1H,d,J=7.8 Hz,H-1″),4.78 (1H,dd,J=11.9,6.4 Hz,H-1a),4.56 (1H,dd,J=7.9,4.5 Hz,H-2′),4.51 (1H,dd, J=12.5,3.9 Hz,H-6″a),4.36 (1H,dd, J=11.9,3.2 Hz,H-6″b),0.97 (6H,t,J=6.1 Hz,2×CH3)。 13C-NMR (pyridine-d5,100 MHz) δ: 175.7 (C-1′),132.3 (C-4),132.3 (C-5),131.0 (C-9),130.2 (C-8),105.7 (C-1″),78.8 (C-5″),78.7 (C-3″),75.0 (C-2″),72.7 (C-2′),72.4 (C-3),71.5 (C-4″),70.3 (C-1),62.9 (C-6″),54.8 (C-2),35.8 (C-3′),33.3 (C-6),33.1 (C-10),33.0 (C-7),32.5 (C-16),26.2 (C-4′),23.0 (C-17),14.5 (2×CH3)。波谱数据与文献[13]一致,故鉴定化合物为1-O-(β-D-glucopyranosyl)-(2S,3S,4E,8E)-2N-[(2′R)-2′-hydroxyhexadecanoyl]-4-(E),8-(Z)-octadecadiene-1,3-diol。

化合物16 白色粉末,TLC紫外灯254,365 nm均无吸收,喷洒硫酸-香草醛显色剂加热后呈红色。[α]=+6.5 (c 0.20,pyridine),ESI-MS m/z 820 [M + Na]+。 1H-NMR (pyridine-d5,400 MHz) δ: 8.36 (1H,d,J=9.1 Hz,NH),6.01 (1H,dt,J=15.5,6.4 Hz,H-5),5.92 (1H,dd,J=15.4,5.6 Hz,H-4),5.50 (2H,m,H-8,9),4.93 (1H,d,J=7.8 Hz,H-1″),4.80 (1H,m,H-2),4.77 (1H,t,J=6.4 Hz,H-3 ),4.69(1H,dd,J=11.2,6.3 Hz,H-1a),4.56 (1H,dd,J=7.8,4.0 Hz,H-2′),4.50 (1H,dd, J=12.5,1.7 Hz,H-6″a),4.35 (1H,dd, J=12.0,3.9 Hz,H-6″b),4.25 (1H,dd,J=11.5,3.5 Hz,H-1b),0.85 (6H,t,J=6.3 Hz,2×CH3)。 13C-NMR (pyridine-d5,100 MHz) δ: 175.5 (C-1′),132.3 (C-4),132.0 (C-5),131.0 (C-9),130.1 (C-8),105.7 (C-1″),78.6 (C-5″),78.6 (C-3″),75.2 (C-2″),72.6 (C-3),72.3 (C-2′),71.5 (C-4″),70.3 (C-1),62.7 (C-6″),54.8 (C-2),35.8 (C-3′),33.3 (C-6),32.8 (C-7,10),32.0 (C-16),26.0 (C-4′),23.0 (C-17),14.3 (2×CH3)。波谱数据与文献[14]一致,故鉴定化合物为1-O-β-D-glucopyranosyl-(2S,3R,4E,8E)-2-[2′(R)-hydroxydocosanoylamino]-4,8-octadecadiene-1,3-diol (typhoniside A)。

化合物17 白色粉末,TLC紫外灯254,365 nm均无吸收,喷洒硫酸-香草醛显色剂加热后呈红色。[α]=+5.4 (c 0.16,pyridine),ESI-MS m/z 738 [M + Na]+。1H-NMR (pyridine-d5,400 MHz) δ: 8.30 (1H,d,J=9.3 Hz,NH),5.50 (2H,m,H-8,9),4.87 (1H,d,J=7.7 Hz,H-1″),4.80 (1H,m,H-2),4.71 (1H,m,H-1a ),4.68(1H,m,H-2),4.60 (1H,dd,J=7.5,4.0 Hz,H-2′),4.47 (1H,dd, J=12.1,1.7 Hz,H-6″a),4.32 (1H,dd, J=12.0,5.5 Hz,H-6″b),4.18 (2H,m,H-1b,H-3),0.87 (6H,t,J=6.5 Hz,2×CH3)。 13C-NMR (pyridine-d5,100 MHz) δ: 175.6 (C-1′),131.0 (C-9),130.8 (C-8),105.7 (C-1″),78.6 (C-5″),78.5 (C-3″),75.2 (C-2″),72.4 (C-2′),71.9 (C-4″),71.4 (C-3),70.3 (C-1),62.7 (C-6″),54.8 (C-2),35.8 (C-3′),33.2 (C-7,10),32.0 (C-16),26.3 (C-4′),23.0 (C-17),14.3 (2×CH3)。波谱数据与文献[15]一致,故鉴定化合物为1-O-β-D-glucopyranosyl-(2S,3R,8E)-2-[(2′R)-2-hydroxypalmitoylamino]-8-octadecene-1,3-diol。

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