Synthesis of .ALPHA.- and .GAMMA.-(N-carbobenzoxy- and N-tert-butyloxycarbonyl-L-glutamyl)cholines.
作者:MATAO KANAOKA、YUJI HORIKAWA、HARUHIKO KUGO、YOSHITO NISHIZAWA
DOI:10.1248/cpb.33.5062
日期:——
In order to examine the lipotropic and hypotensive effects of glutamylcholines, α-and γ-(Z-and Boc-glutamyl) cholines (4a, 4'a, 4b and 4'b) were synthesized by the removal of the tert-butyl and benzyl groups of the corresponding tert-butyl (3a and 3'a) and benzyl (3b and 3'b) choline esters which were obtained by the esterification of tert-butyl Z-glutamates (1a and 1'a) and benzyl Boc-glutamate dicyclohexylamine salts (1b and 1'b) with N, N-dimethylaminoethyl chloride, followed by methylation with methyl halide.
为了研究谷氨酰胆碱的利胆和降压作用,通过去除相应的叔丁基(3a和3'a)和苄基(3b和3'b)胆碱酯中的叔丁基和苄基,合成了α-和γ-(Z-和Boc-谷氨酰)胆碱(4a, 4'a, 4b和4'b)。这些胆碱酯是通过叔丁基Z-谷氨酸盐(1a和1'a)和苄基Boc-谷氨酰二环己胺盐(1b和1'b)与N,N-二甲氨基乙基氯化物的酯化反应制备的,随后用甲基卤进行甲基化。