Journal of the Chinese Chemical Society p. 77 - 81 (1996)
Update date:2022-08-04
Topics:
Ma, Ying-Tsun
Hsu, Feng-Lin
Lan, Shu-Jan J.
Chen, Chieh-Fu
From the acetone extract of fresh betel nuts, two procyanidin pentamers, two procyanidin tetramers and three procyanidin trimers, along with (+)-catechin, (-)-epicatechin, procyanidin A-1, procyanidin B-1, procyanidin B-2, and procyanidin B-7 were isolated. Based on 1H NMR and 13C NMR spectral data as well as the results of thiolysis degradation, the chemical structures of two series of oligomeric arecatannins A and B have been established. The arecatannins from betel nuts were found to be condensed-type tannins which possess (-)-epicatechin unit and (+)-catechin units. All arecatannins had C4-C8 linked (-)-epicatechin in the upper units whereas the (+)-catechin in the terminal unit had C4-C8 or C4-C6 linkage.
View MoreBeijing Huikang Boyuan Chemical Tech Co.,LTD
Contact:+86-10-68862197
Address:No.7 Haiying Road,Science City,Fengtai District,Beijing,China
Jiaxing Trustworthy Import And Export Co.,Ltd
Contact:+86-573-82030555
Address:Room 1202, Unit B, Charming plaza,No.1558 East Zhongshan Road , Jiaxing City, Zhejiang Province, China.
Lonzeal Pharmaceuticals Co., Ltd.
website:http://www.lonzeal.com
Contact:+86-13381011962
Address:RM 801, Yue MOMA, No. 26 Anningzhuang Rd. Haidian District, Beijing, China
Shijiazhuang Haotian Chemical Co., Ltd.
Contact:86-311-85044374
Address:293 Donggang Road
website:https://www.sinoshiny.com/products
Contact:+86-20-62802632;62802633
Address:Room 330 GIGCAS Building,No.511 Kehua Street,Tianhe District
Doi:10.1016/S0008-6215(00)83834-3
(1980)Doi:10.1021/jo01295a004
(1980)Doi:10.1021/acs.jmedchem.5b01925
(2016)Doi:10.1002/chem.200305260
(2004)Doi:10.1021/om049699y
(2004)Doi:10.1016/j.tet.2004.03.084
(2004)