Process for steroid preparation
    23.
    发明授权
    Process for steroid preparation 失效
    类固醇制剂的处理

    公开(公告)号:US5352808A

    公开(公告)日:1994-10-04

    申请号:US972228

    申请日:1992-11-05

    摘要: A process for the preparation of a compound of the formula ##STR1## wherein R.sub.1 is selected from the group consisting of hydrogen, alkyl of 1 to 4 carbon atoms optionally substituted by halogen or a nitrogen or oxygen function and alkenyl and alkynyl of 2 to 4 carbon atoms, R.sub.2 is alkyl of 1 to 4 carbon atoms and the A, B, C and D rings are optionally substituted by at least one member of the group consisting of optionally protected --OH or .dbd.0, halogen, alkyl and alkoxy of 1 to 4 carbon atoms and alkenyl and alkynyl of 2 to 4 carbon atoms comprising reacting a compound of the formula ##STR2## wherein R.sub.1 and R.sub.2 and the A, B, C and D rings are defined as above with an oxidizing agent in the presence of water and an at least partially water-miscible solvent to obtain a compound of the formula ##STR3## wherein R.sub.1 and R.sub.2 and the A, B, C and D rings are defined as above, subjecting the latter to a solvolysis in a basic or acidic media and optionally subjecting the product to a deprotection reaction of any protected --OH or .dbd.0 groups to obtain the compound of formula I and novel intermediates.

    摘要翻译: 一种制备式Ⅰ化合物的方法,其中R 1选自氢,任选被卤素或氮或氧官能取代的1至4个碳原子的烷基,和2〜 4个碳原子,R 2是1至4个碳原子的烷基,A,B,C和D环任选地被至少一个选自被保护的-OH或= O,卤素,烷基和烷氧基的基团取代 包括2至4个碳原子的烯基和炔基,包括使式II化合物与下式定义的其中R 1和R 2以及A,B,C和D环的定义如上所述与氧化剂反应 存在水和至少部分水混溶性溶剂以得到式III的化合物,其中R 1和R 2以及A,B,C和D环如上所定义,使其经过溶剂分解 碱性或酸性介质,并任选地使产物经脱保护 任何被保护的-OH或= 0个基团的n个反应,以获得式I化合物和新的中间体。

    Process for crystallizing the organic substances from steroidal origin
and the thus obtained compounds
    24.
    发明授权
    Process for crystallizing the organic substances from steroidal origin and the thus obtained compounds 失效
    从甾体来源结晶有机物质和由此得到的化合物的方法

    公开(公告)号:US5266712A

    公开(公告)日:1993-11-30

    申请号:US910284

    申请日:1992-08-14

    申请人: Michel Lanquetin

    发明人: Michel Lanquetin

    摘要: A process for crystallizing a pharmaceutically active steroidal product, without mechanical procedure, to obtain a homogeneous granulometric class which may be prepared beforehand, wherein the product which is desired to be crystallized is dissolved in a ternary mixture made of a lipophilic solvent, a hydrophilic solvent and a surface active agent at a temperature close to the boiling point of the mixture of solvents and wherein the mixture of solvents is allowed to revert to a temperature where the crystallization initiates, then, the thus-formed crystals are recovered.

    摘要翻译: PCT No.PCT / FR91 / 00888 Sec。 371日期:1992年8月14日 102(e)日期1992年8月14日PCT 1991年11月12日PCT PCT。 公开号WO92 / 08730 日本1991年5月29日。一种用于使机械程序结晶药学活性甾体产物以获得可以预先制备的均匀粒度等级的方法,其中希望结晶的产物溶解在由 亲油溶剂,亲水性溶剂和表面活性剂,在接近溶剂混合物的沸点的温度下,使溶剂混合物回复到结晶起始的温度,然后,由此形成的晶体为 恢复。

    Process for the synthesis of 6-bromo-17,21-dihydroxy
3,11,20-trioxo-1,4-pregnadienes 17,21-diesters
    30.
    发明授权
    Process for the synthesis of 6-bromo-17,21-dihydroxy 3,11,20-trioxo-1,4-pregnadienes 17,21-diesters 失效
    合成6-溴-17,21-二羟基3,11,20-三氧代-1,4-孕es烯17,21-二酯的方法

    公开(公告)号:US4440690A

    公开(公告)日:1984-04-03

    申请号:US453844

    申请日:1982-12-27

    IPC分类号: C07J5/00

    CPC分类号: C07J5/0076 C07J5/0053

    摘要: Disclosed is an improved process for the synthesis of 6-bromo-17,21-dihydroxy-3,11,20-trioxo-1,4,-pregnadienes 17,21-diesters. In particular, this invention relates to the conversion of 17,21-dihydroxy-3,11,20-trioxo-1,4-pregnadienes 17,21-diesters to 6-borom-17,21-dihyroxy-3,11,20-trioxo-1,4-pregnadienes-17-21-diesters via bromination under ionic conditions, e.g. bromine in acetic acid.

    摘要翻译: 公开了一种用于合成6-溴-17,21-二羟基-3,11,20-三氧代-1,4-辛二烯17,21-二酯的改进方法。 特别地,本发明涉及将17,21-二羟基-3,11,20-三氧代-1,4-孕代二烯17,21-二酯转化成6-硼烷-17,21-二羟基-3,11,20 通过在离子条件下的溴化,例如,三氧杂-1,4-孕二烯-17-21-二酯 溴在乙酸中。