Thirteen Novel Cycloartane-Type Triterpenes from <i>Combretum quadrangulare</i>
Arjun H. BanskotaInstitute of Natural Medicine, Toyama Medical and Pharmaceutical University, 2630-Sugitani, Toyama 930-0194, Japan, National University Ho Chi Minh City, Ho Chi Minh City, Vietnam, and National Research Institute of Police Science, 6 Sanban-cho, Chiyoda-ku, Tokyo 102-0075, JapanYasuhiro TezukaInstitute of Natural Medicine, Toyama Medical and Pharmaceutical University, 2630-Sugitani, Toyama 930-0194, Japan, National University Ho Chi Minh City, Ho Chi Minh City, Vietnam, and National Research Institute of Police Science, 6 Sanban-cho, Chiyoda-ku, Tokyo 102-0075, JapanKim Qui TranInstitute of Natural Medicine, Toyama Medical and Pharmaceutical University, 2630-Sugitani, Toyama 930-0194, Japan, National University Ho Chi Minh City, Ho Chi Minh City, Vietnam, and National Research Institute of Police Science, 6 Sanban-cho, Chiyoda-ku, Tokyo 102-0075, JapanKen TanakaInstitute of Natural Medicine, Toyama Medical and Pharmaceutical University, 2630-Sugitani, Toyama 930-0194, Japan, National University Ho Chi Minh City, Ho Chi Minh City, Vietnam, and National Research Institute of Police Science, 6 Sanban-cho, Chiyoda-ku, Tokyo 102-0075, JapanIkuo SaikiInstitute of Natural Medicine, Toyama Medical and Pharmaceutical University, 2630-Sugitani, Toyama 930-0194, Japan, National University Ho Chi Minh City, Ho Chi Minh City, Vietnam, and National Research Institute of Police Science, 6 Sanban-cho, Chiyoda-ku, Tokyo 102-0075, JapanShigetoshi KadotaInstitute of Natural Medicine, Toyama Medical and Pharmaceutical University, 2630-Sugitani, Toyama 930-0194, Japan, National University Ho Chi Minh City, Ho Chi Minh City, Vietnam, and National Research Institute of Police Science, 6 Sanban-cho, Chiyoda-ku, Tokyo 102-0075, Japan
1999en
ABI
Annotatsiya
Thirteen novel cycloartane-type triterpenes were isolated from Combretum quadrangulare, a Vietnamese medicinal plant. The structures of the novel triterpenes were determined by spectroscopic methods as well as by chemical transformations. Among those compounds, quadrangularic acids F (1), G (2), and H (4) and 24-epiquadrangularic acid G (3) are the first examples of cycloartane-type triterpenes bearing carboxylic acid groups at both C-4 and C-20. Furthermore, norquadrangularic acid A (13) is the first example of a trinorcycloartane-type triterpene isolated from the genus Combretum.
Hali tarjima qilinmagan
Identifikatorlar
Iqtiboslar va manbalar
2 ta iqtibos0 ta foydalanilgan manba