School of Agriculture, Tokai University.
Faculty of Pharmaceutical Sciences, Fukuoka University.
Chem Pharm Bull (Tokyo). 2021;69(3):291-297. doi: 10.1248/cpb.c20-00905.
Alkaline hydrolysis of crude resin glycoside fraction of the seeds of Ipomoea muricata (L.) Jacq. (Convolvulaceae) yielded a new glycosidic acid, muricatic acid D; three known glycosidic acids, namely, muricatic acids A, B, and C; and three known organic acids, namely, isobutyric, 2S-methylbutyric, and 2S-methyl-3S-hydroxybutyric acid. Two new genuine resin glycosides with macrolactone structures (jalapins), muricatins X and XI, were also isolated from the fraction. Their structures were determined using spectroscopic data and chemical evidence.
Ipomoea muricata (L.) Jacq. (Convolvulaceae) 种子粗树脂糖苷部分经堿水解得到一种新的糖苷酸，即 muricatic 酸 D；三种已知的糖苷酸，即 muricatic 酸 A、B 和 C；以及三种已知的有机酸，即异丁酸、2S-甲基丁酸和 2S-甲基-3S-羟基丁酸。该部分还分离得到两种具有大环内酯结构的新真正树脂糖苷（jalapins），即 muricatins X 和 XI。它们的结构是通过光谱数据和化学证据确定的。
