An Efficient Synthesis of a Key Inter- mediate for Vasopressin V2 Receptor Agonist OPC-51803 by Lipase-catalyzed Enantioselective Transesterification
作者:Tadaaki Ohtani、Kazuyoshi Kitano、Jun Matsubara、Seiji Morita、Yoshikazu Kawano、Makoto Komatsu、Masahiko Bando、Masaru Kido、Minoru Uchida、Fujio Tabusa
DOI:10.3987/com-02-s(m)25
日期:——
An efficient and enantioselective synthesis of (R)-[1-(p-toluene-sulfonyl)-2,3,4,5-tetrahydro-1H-1-benzazepin-5-yl]acetic acid (2), a key intermediate in the synthesis of (R)-2-1-[2-chloro-4-(1-pyrrolidinyl)benzoyl]-2,3,4,5-tetrahydro-1H-1-benzazepin-5-yl}-N-isopropylacetamide (OPC-51803, 1), was accomplished. The chiral alcohol [(S)-3], the precursor of (R)-2, was separated from the racemic alcohol
(R)-[1-(p-甲苯-磺酰基)-2,3,4,5-四氢-1H-1-苯扎西平-5-基]乙酸(2)的高效和对映选择性合成,一种关键中间体在 (R)-2-1-[2-chloro-4-(1-pyrrolidinyl)benzoyl]-2,3,4,5-tetrahydro-1H-1-benzazepin-5-yl}-N 的合成中-异丙基乙酰胺 (OPC-51803, 1),完成。手性醇 [(S)-3] 是 (R)-2 的前体,使用脂肪酶介导的醋酸乙烯酯交换从外消旋醇 [(')-3] 中分离出来。得到的(S)-3在不使用柱层析的情况下进行分级分离,并将其转化为2而对映体过量没有减少。