申请人:Syntex (U.S.A.) Inc.
公开号:US04667038A1
公开(公告)日:1987-05-19
Compounds of the formula ##STR1## wherein R.sub.1 and R.sub.2 and each independently --H or lower alkoxy; R.sub.3 and R.sub.4 are each independently lower alkyl; and R.sub.5 and R.sub.6 are each --OCH.sub.3, or together form --OCH.sub.2 O-- or --OCH.sub.2 CH.sub.2 O--, and pharmaceutically acceptable acid addition salts thereof are prepared by cyclizing, deoxygenating, coupling, or hydrogenating the intermediates disclosed herein.
该公式的化合物为##STR1##其中R.sub.1和R.sub.2分别为--H或较低的烷氧基; R.sub.3和R.sub.4分别为较低的烷基; R.sub.5和R.sub.6分别为--OCH.sub.3,或一起形成--OCH.sub.2 O--或--OCH.sub.2 CH.sub.2 O--,以及其药学上可接受的酸盐是通过在此披露的中间体中环化、脱氧、偶联或加氢来制备的。