Spirobenzoxazinium salts, method of use and compositions thereof as
申请人:Merck & Co., Inc.
公开号:US04067980A1
公开(公告)日:1978-01-10
Quaternary salts of 3,4-dihydrospiro-2H-1,3-benzoxazines are prepared by treating 3,4-dihydrospiro-2H-1,3-benzoxazines with an alkylating agent. The products are antihypertensive agents.