Furanfurin and Thiophenfurin: Two Novel Tiazofurin Analogs. Synthesis, Structure, Antitumor Activity, and Interactions with Inosine Monophosphate Dehydrogenase
作者:Palmarisa Franchetti、Loredana Cappellacci、Mario Grifantini、Anna Barzi、Giuseppe Nocentini、Hongyoan Yang、Ayrn O'Connor、Hiremagalur N. Jayaram、Christopher Carrell、Barry M. Goldstein
DOI:10.1021/jm00019a013
日期:1995.9
5-tetra-O-acetyl-D-ribofuranose gave 2- and 5-glycosylated regioisomers, as a mixture of alpha- and beta-anomers, and the beta-2,5-diglycosylated derivatives. Deprotection of ethyl 5-(2,3,5-tri-O-acetyl-beta-D-ribofuranosyl)furan-3-carboxylate (9 beta) and ethyl 5-(2,3,5-tri-O-acetyl-beta-D-ribofuranosyl)thiophene-3-carboxylate (20 beta) with sodium ethoxide afforded ethyl 5-beta-D-ribofuranosylfuran-3-carboxylate
描述了噻唑呋喃的呋喃和噻吩类似物(分别为呋喃呋喃和噻吩呋喃)的合成。用1,2,3,5-四-O-乙酰基-D-呋喃呋喃糖将三呋喃甲酸乙酯(6)或3-噻吩甲酸乙酯(18)直接用氯化锡催化的C-糖基化反应得到2-和5-糖基化的区域异构体,是α和β异头异构体的混合物,以及β-2,5-二糖基化衍生物。5-(2,3,5-三-O-乙酰基-β-D-呋喃呋喃糖基)呋喃-3-羧酸酯(9 beta)和5-(2,3,5-三-O-乙酰基-乙基-乙基的脱保护β-D-呋喃呋喃糖基)噻吩-3-羧酸盐(20 beta)与乙醇钠制得5-β-D-呋喃呋喃糖基呋喃-3-羧酸乙酯(12 beta)和5-β-D-呋喃呋喃糖基噻吩-3-羧酸乙酯(23 β)转化为5-β-D-呋喃呋喃糖基呋喃-3-羧酰胺(呋喃呋喃,4)和5-β-D-呋喃呋喃糖基噻吩-3-甲酰胺(thiophenfurin,5)与氢氧化铵反应。通过1 H-NMR和质子-质子