申请人:Hoffmann-La Roche Inc.
公开号:US03989724A1
公开(公告)日:1976-11-02
Stereo-specific total synthesis of steroidal materials. 7-Substituted 3-oxo-1-heptenes or variants thereof are reacted with 2-alkylcycloalkane-1,3-diones yielding 3-substituted 6a .beta.-alkyl-cyclopenta [f] [1] benzopyrans or naphtho [2,1-b] pyrans. These are then subjected to a selective catalytic hydrogenation followed by an introduction of a hydroxy, alkoxy or acyloxy group at the 4a-position to produce a 3-substituted 6a .beta.,4a-hydroxy, alkoxy or acyloxy perhydrocyclopenta [f] [1] benzopyran or perhydro-naphtho [2,1-b] pyran. These latter compounds are then converted into 4- or 5-(3-oxoalkyl)perhydroindene-5-ones or perhydronaphthalene-6-ones which in turn can be converted to known steroidal materials by known methods.
立体特异性合成类固醇材料。7-取代的3-氧代-1-庚烯或其变体与2-烷基环戊烷-1,3-二酮反应,生成3-取代的6a .β.-烷基-环戊二氢苯并呋喃或萘并呋喃。然后经过选择性催化氢化,接着在4a-位引入一个羟基、烷氧基或酰氧基基团,生成3-取代的6a .β.,4a-羟基、烷氧基或酰氧基的环戊二氢苯并呋喃或二氢萘并呋喃。然后这些化合物转化为4-或5-(3-氧代烷基)二氢茚-5-酮或二氢萘-6-酮,这些又可以通过已知方法转化为已知的类固醇材料。