Studies on the Constituents of Catalpa Species. II. Iridoids from Catalpae Fructus.
作者:Koichi MACHIDA、Mami OGAWA、Masao KIKUCHI
DOI:10.1248/cpb.46.1056
日期:——
Four new iridoids, des-p-hydroxybenzoyl kisasagenol B, 6-O-p-hydroxybenzoyl asystasioside E, 6-O-p-hydroxybenzoyl glutinoside and 6-O-cis-p-coumaroyl catalpol, were isolated from Catalpae Fructus. Their structures were established by spectral analysis.
Chemical components from the seeds of Catalpa bungei and their inhibitions of soluble epoxide hydrolase, cholinesterase and nuclear factor kappa B activities
作者:Hao-Yu Tang、Meng-Meng Bai、Jun-Mian Tian、Gennaro Pescitelli、Trpimir Ivšić、Xiao-Hua Huang、Hyunwoo Lee、Ya Nan Son、Jang Hoon Kim、Young Ho Kim、Jin-Ming Gao
DOI:10.1039/c6ra04207d
日期:——
Two new chlorinated iridoids, named bungosides A (1) and B (2), were isolated from the seeds of Catalpa bungei (family Bignoniaceae). Their structures were elucidated on the basis of NMR analysis. Twenty known compounds (3–22) were also characterized, including in one case (6-O-p-hydroxybenzoylglutinoside, 3) the assignment of the absolute configuration by employing electronic circular dichroism (CD)