Carbohydrate Research p. 131 - 144 (1992)
Update date:2022-08-04
Topics:
Vogel
Steffan
Boye
Kristen
Betaneli
Ott
Kochetkov
Helferich glycosylation of the cyanoethylidene L-rhamnose derivative 3 with the galactosyluronic bromide 2 gave the disaccharide 4 as a key intermediate in the synthesis of the monomer 13 for trityl-cyanoethylidene condensation (TCC). The following formation of the monomer 13, including introduction of a trityl group at O-3', proceeded in six steps. Because of the difficulty of some steps, an alternative route for 13 was tested. Model compounds 20, 21, and 22 were synthesized in order to confirm the stereoregularity of the products of the polycondensation. The polycondensation of the monomer gave D-GalpA-(1 → 3)-L-Rha-oligomer derivatives consisting mainly of three repeating units. This result is in contrast with the degree of polymerisation (dp ≥ 22) of other synthetic rhamnans, but is very similar to dp 2-7 of homo- and hetero-glucuronan derivatives.
View MoreSHANDONG ZHANHUA YONGHAO PHARMACEUTICAL TECH.CO.,LTD
Contact:+86-576-88685096
Address:GENGJU VILLAGE NORTH ONE KILOMETER,ZHANHUA DISTRICT,BINZHOU CITY,SHANDONG PROVINCE,CHINA.
Shandong Shouguang Songchuan Industrial Additives Co.,Ltd
Contact:+86-536-8566856
Address:Shouguang,Shandong,China
Tianjin Ji Ping Jia Chemical Co., Ltd.
Contact:18622448868
Address:tianjin
Tianjin Anda North Industrial & Business Co.Ltd.
Contact:86-22-24999306
Address:No.11 Erwei Road,Dongli Development Area,Tianjin,China
Jinan Jianfeng Chemical Co., Ltd
Contact:0086-531-88110457
Address:sales01(-a-t-)pharmachemm{dot}c+o+m
Doi:10.1021/ja01571a042
(1957)Doi:10.1016/S0040-4039(00)77471-5
(1993)Doi:10.1016/0040-4020(95)00080-R
(1995)Doi:10.1246/bcsj.66.661
(1993)Doi:10.1021/jo00062a030
(1993)Doi:10.1021/ja00875a046
(1962)