申请人:Bermejo González Francisco
公开号:US20110118488A1
公开(公告)日:2011-05-19
6-alkylidenandrost-1,4-dien-3-ones of general formula (I), wherein R is H o alkyl; R
1
y R
2
, independently of one another, represent H, OR
3
, OC(═O)R
4
or O-(GPH), wherein R
3
is H; C
1
-C
6
alkyl or aryl; R
4
is H or C
1
-C
6
alkyl, and GPH is a hydroxyl protecting group; or R
1
and R
2
, together with the carbon atom to which they are bonded, form a carbonyl group or equivalent or a cyclic ketal; can be obtained by a process comprising subjecting the corresponding 6-alkyliden-4-androsten-3-one to a dehydrogenation reaction in the 1,2 position in the presence of a quinone, a silylating agent and a strong acid.
通式为(I)的6-烷基烯基雄烯-1,4-二烯-3-酮,其中R为氢或烷基;R1和R2独立地代表氢、OR3、OC(═O)R4或O-(GPH),其中R3为氢、C1-C6烷基或芳基;R4为氢或C1-C6烷基,GPH是羟基保护基;或R1和R2与它们所连接的碳原子一起形成一个羰基或等效的环糊精;可通过在醌、硅基化剂和强酸存在下,使相应的6-烷基烯基-4-雄烯-3-酮在1,2位进行脱氢反应而获得。