申请人:John Wyeth & Brother, Ltd.
公开号:US04577022A1
公开(公告)日:1986-03-18
The invention provides new silyl derivatives of 5,6,7,8-tetrahydroquinolines and related compounds. The tetrahydroquinolines are substiuted at the 8-position by the group SiR.sub.3 where R may be one of various hydrocarbon groups or an electron donating substituent. The 8-position may also carry a lithium, sodium or potassium atom. The new silyl derivatives may be prepared by treating a corresponding 8-lithio, sodio or potassio tetrahydroquinoline with a silyl halide R.sub.3 SiHal followed by a metal compound R*M where M is sodium, potassium or lithium and R* is alkyl, cycloalkyl, aralkyl or aryl or an amine residue. The new silyl derivatives are useful intermediates for the preparation of known 5,6,7,8-tetrahydroquinline-8-nitriles, amides and thioamides employing an alkyl silyl isothiocyanate or cyanate. The nitriles and thioamides are anti-ulcer agents. The related compounds may be made by analogous methods.
本发明提供了5,6,7,8-四氢喹啉及其相关化合物的新硅基衍生物。其中,四氢喹啉在8位上被SiR.sub.3基团取代,其中R可以是各种碳氢基团或电子供体取代基。8位也可以携带锂、钠或钾原子。新的硅基衍生物可以通过处理相应的8-锂、钠或钾四氢喹啉与硅卤R.sub.3 SiHal,然后再加入金属化合物R*M(其中M为钠、钾或锂,R*为烷基、环烷基、芳基烷基或芳基或胺基残基)来制备。新的硅基衍生物是制备已知的5,6,7,8-四氢喹啉-8-腈、酰胺和硫酰胺的有用中间体,这些中间体使用烷基硅基异硫氰酸酯或氰酸酯。腈和硫酰胺是抗溃疡药物。相关化合物可以通过类似的方法制备。