申请人:UBE Industries, Ltd.
公开号:US05874581A1
公开(公告)日:1999-02-23
A 2-silyloxy-4,5,6,7-tetrahydrothieno\x9b3,2-c!pyridine represented by the formula (I): ##STR1## wherein R.sup.1, R.sup.2 and R.sup.3 each independently represent an alkyl group having 1 to 10 carbon atoms or an aryl group, and a salt thereof and a process for preparing the same, and a 5-alkyl-2-silyloxy-4,5,6,7-tetrahydrothieno\x9b3,2-c!-pyridine represented by the formula (IV): ##STR2## wherein R.sup.1, R.sup.2 and R.sup.3 represent the same meanings as described above; R.sup.4 represents a hydrogen atom, an alkoxycarbonyl group having 2 to 10 carbon atoms, an acyl group having 2 to 10 carbon atoms or a cyclo-alkylcarbonyl group having 4 to 10 carbon atoms; and R.sup.5 represents a halogen atom, an alkyl group having 1 to 4 carbon atoms or an alkoxy group having 1 to 4 carbon atoms, which is useful as a synthetic intermediate of an antiplatelet medicine and an elastase inhibitor, etc., and a process for preparing the same.
公式(I)表示为2-硅氧基-4,5,6,7-四氢噻吩[3,2-c]吡啶,其化学式为:##STR1## 其中R1、R2和R3各自独立地表示具有1至10个碳原子的烷基或芳基,以及其盐和制备方法。公式(IV)表示为5-烷基-2-硅氧基-4,5,6,7-四氢噻吩[3,2-c]吡啶,其化学式为:##STR2## 其中R1、R2和R3表示如上所述的相同含义;R4表示氢原子、具有2至10个碳原子的烷氧羰基、具有2至10个碳原子的酰基或具有4至10个碳原子的环烷基羰基;R5表示卤原子、具有1至4个碳原子的烷基或具有1至4个碳原子的烷氧基,其可用作抗血小板药物和弹性酶抑制剂等的合成中间体,以及其制备方法。