Resin glycosides. V. Identification and characterization of the component organic and glycosidic acids of the ether-soluble crude resin glycosides ("jalapin") from Rhizoma Jalapae Braziliensis (roots of Ipomoea operculata).
作者:Masateru ONO、Toshio KAWASAKI、Kazumoto MIYAHARA
DOI:10.1248/cpb.37.3209
日期:——
Alkaline hydrolysis of the ether-soluble resin glycoside ("jalapin") fraction of the roots of Ipomoea operculata (Convolvulaceae) gave five glycosidic acids, operculinic acids A (1), B (2), C (3), D and E, along with n-decanoic and n-dodecanoic acids. Operculinic acids A, B and C were characterized to be 11S-jalapinolic acid 11-O-β-D-glucopyranosyl-(1→3)-O-[α-L-rhamnopyranosyl-(1→4)]-O-α-L-rhmnopyranosyl-(1→4)-O-α-L-rhamnopyranosyl-(1→2)-β-D-fucopyranoside, 11S-jalapinolic acid 11-O-β-D-glucopyranosyl-(1→3)-O-[α-L-rhamnopyranosyl-(1→4)]-O-α-L-rhamnopyranosyl-(1→4)-O-α-L-rhamnopyranosyl-(1→2)-β-D-glucopyranoside and 11S-jalapinolic acid 11-O-α-L-rhamnopyranosyl-(1→4)-O-α-L-rhamnopyranosyl-(1→4)-O-α-L-rhamnopyranosyl-(1→2)-β-D-fucopy6ranoside, respectively, on the basis of chemical and spectroscopic data.n-Decanoic and n-dodecasnoic acids found in this study are the first component organic acids of the resin glycosides so far studied.
对厣苕(旋花科)根部的醚溶性树脂苷("jalapin")部分进行碱性水解,得到了五种苷酸,即厣苕酸 A (1)、B (2)、C (3)、D 和 E,以及正癸酸和正十二烷酸。operculinic acids A、B 和 C 的特征为 11S-jalapinolic acid 11-O-β-D-glucopyranosyl-(1→3)-O-[α-L-rhamnopyranosyl-(1→4)]-O-α-L-rhmnopyranosyl-(1→4)-O-α-L-rhamnopyranosyl-(1→2)-β-D-fucopyranoside 、11S-jalapinolic acid 11-O-β-D-glucopyranosyl-(1→3)-O-[α-L-rhamnopyranosyl-(1→4)]-O-α-L-rhamnopyranosyl-(1→4)-O-α-L-rhamnopyranosyl-(1→2)-β-D-葡萄糖苷和 11S-jalapinolic acid 11-O-α-L-rhamnopyranosyl-(1→4)-O-α-L-rhamnopyranosyl-(1→4)-O-α-L-rhamnopyranosyl-(1→2)-β-D-fucopy6ranoside、根据化学和光谱数据,分别命名为本研究发现的正癸酸和正十二烷酸是迄今为止研究的树脂苷中的第一种有机酸成分。