申请人:Scharer Norber
公开号:US20060100434A1
公开(公告)日:2006-05-11
A process for preparing 17β-substituted 4-azaandrost-1-en-3-one compounds of the general formula (I):
or a pharmaceutically approved salt thereof, where
R is hydroxyl, optionally substituted, linear or branched (C
1
-C
2
)alkyl or (C
1
-C
12
)alkenyl; phenyl or benzyl; an —OR
1
radical, or an —NHR
1
radical, or an —NR
1
R
2
radical;
R
1
is hydrogen, optionally substituted, linear or branched (C
1
-C
12
)alkyl or (C
1
-C
12
)alkenyl, or optionally substituted phenyl;
R
2
is hydrogen, methyl, ethyl or propyl; or
—NR
1
R
2
is a 5- or 6-membered heterocyclic ring,
by (A) introducing protecting groups into the 3-keto-4-aza moiety of the corresponding 1,2-dihydro compound, so that a compound of the general formula (III) is formed:
where
R
3
is trialkylsilyl or, together with R
4
, the —C(O)—C(O)— or —C(O)—Y—C(O)— radical;
R
4
is alkyloxycarbonyl or phenyloxycarbonyl, preferably Boc (=tert-butyloxycarbonyl); or trialkylsilyl, or, together with R
3
, the —C(O)—C(O)— or —C(O)—Y—C(O)— radical;
Y is —[C(R
5
)(R
6
)]
n
— or —CH(R
5
)═CH(R
6
)—, or ortho-phenylene;
R
5
and R
6
are each independently hydrogen, linear or branched (C
1-8
)alkyl or alkenyl, optionally substituted phenyl or benzyl; and n is an integer of 1 to 4; and where, in the case that R is hydroxyl, it has optionally reacted with a protecting group; (B) reacting the resulting compound in the presence (i) of a dehydrogenation catalyst, and in the presence of (ii) optionally substituted benzoquinone, allyl methyl carbonate, allyl ethyl carbonate and/or allyl propyl carbonate, and
(C) removing the protecting groups R
3
and R
4
and optionally converting the resulting compound to a salt.
一种制备一般式(I)的17β-取代4-氮杂睾酮-1-烯-3-酮化合物或其药学上批准的盐的方法,其中R为羟基,可选取代,线性或支链(C1-C2)烷基或(C1-C12)烯基;苯基或苄基;一个-OR1基团,或一个-NHR1基团,或一个-NR1R2基团;R1为氢,可选取代,线性或支链(C1-C12)烷基或(C1-C12)烯基,或可选取代的苯基;R2为氢,甲基,乙基或丙基;或-NR1R2为5-或6-成员杂环环;通过(A)将保护基引入相应的1,2-二氢化合物的3-酮-4-氮杂基中,从而形成一般式(III)的化合物:其中R3为三烷基硅基或与R4一起为-C(O)-C(O)-或-C(O)-Y-C(O)-基团;R4为烷氧羰基或苯氧羰基,优选为Boc(=叔丁氧羰基);或三烷基硅基或与R3一起为-C(O)-C(O)-或-C(O)-Y-C(O)-基团;Y为-[C(R5)(R6)]n-或-CH(R5)═CH(R6)-,或邻苯二甲酰基;R5和R6独立地为氢,线性或支链(C1-8)烷基或烯基,可选取代的苯基或苄基;n为1至4的整数;在R为羟基的情况下,它可选择与保护基反应;(B)在(i)存在脱氢催化剂和(ii)可选取代苯醌,丙烯基甲基碳酸酯,丙烯基乙基碳酸酯和/或丙烯基丙基碳酸酯的情况下,反应所得化合物;(C)去除保护基R3和R4,并可选择将所得化合物转化为盐。