Phytochemistry p. 2251 - 2256 (1984)
Update date:2022-08-25
Topics:
Ramaiah, Parimi Atchuta
Devi, Parimi Uma
Frolow, Felix
Lavie, David
3-Oxo-friedelan-20α-oic acid, named as maytenonic (polpunonic) acid, has been isolated along with β-amyrin and sitosterol from Gymnosporia emarginata. 1H and 13C NMR signals have been assigned for the structure.X-ray analysis of the single crystal confirmed that the carboxylic acid is α-oriented at C-20 and the D/E rings of this D:A-friedo-oleanane are in chair-chair conformation. 13C NMR data of the present compound also enabled the assignment of the C-20α- and β-methyl carbons in friedelin. - Key Word Index: Gymnosporia emarginata; Celastraceae; β-amyrin; D:A-friedo-oleananes; friedelin; 3-oxo-friedelan-20α-oic acid; maytenonic acid; polpunonic acid; sitosterol.
View More
Changzhou BaoKang Pharmaceutical & Chemical Co., Ltd
Contact:(86) 519-88782201 88784080 88785278
Address:Henglin town, changzhou,Jiangsu
HaiNan Periwinkle Pharmaceutical Co.,Ltd.
website:http://www.cchpharm.com/en/index.html
Contact:020-82208978
Address:Gongye road,Wuzhishan city,HaiNan province
Contact:+86-21-54391580
Address:Room 502,No.65,Lane 2388 Hongxin Road,Shanghai,China
Contact:0512-63006287
Address:no.88.YISHENG Road,etdz-WUJIANG,SUZHOU,CHINA
Contact:86-25-51817806
Address:No. 216, middle longpan road, jincheng tower, floor 21-22, nanjing ,china
Doi:10.1021/bi00636a014
(1977)Doi:10.1080/00397919608004611
(1996)Doi:10.1039/f19868202773
(1986)Doi:10.1021/ic500609g
(2014)Doi:10.1134/S107036322006033X
(2020)Doi:10.1021/ja026592y
(2002)
