Tertiary-butyldimethylsilyl carbamate derivative and process for producing the same
申请人:SUNTORY LIMITED
公开号:EP0217243A2
公开(公告)日:1987-04-08
At-butyldimethylsilyl carbamate derivative and a process for producing the same are disclosed. Tertiarybutyl- dimethylsilyl carbamate derivatives having the following general formula (1) are intermediates for the production of a variety of carbamate esters that can be extensively used as drugs acting on the central nervous system or circulatory organs, as agrichemicals (e.g. insecticides and herbicides), or as antimicrobial agents; a process capable of economical and efficient production of such intermediates is also disclosed:
where R1 is an alkyl group having 1 - 3 carbon atoms or a hydrogen atom; R2 is
(where R3 is a hydrogen atom, an alkyl, alkenyl or aralkyl group having 1 - 10 carbon atoms, each of which groups may be substituted by a hydroxyl group, a t-butyldimethylsilyloxy group, a methylthio group, a lower alkoxycarbonyl group, a lower alkoxy group, an indolyl group or an imidazolyl group; R4 is a lower alkoxycarbonyl group, an N-alkylamido group having 2 - 6 carbon atoms, an O-tetrahydropyranylthreonine methyl ester amido residue, an O-t-butyldimethyl- silylthreonine methyl ester amido residue, a threonine methyl ester amido residue or -(CH2)n-COOR5 (where n is an integer of 1 - 3 and R5 is a lower alkyl group), provided that R3 combines with R4 to form a cyclopentyl group, a cyclohexyl group, a tetrahydrofuranyl group or a dioxanyl group, these rings being optionally substituted by a lower alkyl group, a lower alkenyl group, a lower alkoxycarbonyl group or a lower alkoxycarbonylmethyl group); and R' and R2, when taken together, form a 4- or 5-membered carbon ring, which may be substituted by a lower alkoxycarbonyl group or a t-butyldimethylsilyloxycarbonyl group.
本发明公开了叔丁基二甲基
硅基
氨基甲酸酯衍
生物及其生产工艺。具有以下通式(1)的叔丁基二甲基
硅基
氨基甲酸酯衍
生物是生产各种
氨基甲酸酯的中间体,这些
氨基甲酸酯可广泛用作作用于中枢神经系统或循环器官的药物、农用
化学品(如
杀虫剂和
除草剂)或抗菌剂;还公开了一种能够经济、高效地生产这种中间体的工艺:
其中 R1 是具有 1 - 3 个碳原子的烷基或氢原子;R2 是
(其中 R3 是氢原子、具有 1-10 个碳原子的烷基、烯基或芳基,每个基团可被羟基、叔丁基二甲基
硅氧基、甲
硫基、低级烷氧基羰基、低级烷氧基、
吲哚基或
咪唑基取代;R4 是低级烷氧基羰基、具有 2-6 个碳原子的 N-烷基
氨基、O-
四氢吡喃苏
氨酸甲酯
氨基残基、O-叔丁基二甲基
硅基苏
氨酸甲酯
氨基残基、苏
氨酸甲酯
氨基残基或-(
CH2)n-COOR5(其中 n 为 1-3 的整数,R5 为低级烷基)、条件是 R3 与 R4 结合形成环戊基、环己基、
四氢呋喃基或
二噁烷基,这些环可选择被低级烷基、低级烯基、低级烷氧羰基或低级烷氧羰基甲基取代);R'和 R2 合在一起形成一个 4 或 5 元碳环,可被一个低级烷氧羰基或一个 t-丁基二甲基
硅氧基羰基取代。