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- steroiden oestraanreeks van nieuwe delta6
- steroiden oestraanreeks van nieuwe delta6
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机译:-新的delta6类固醇雌激素系列
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摘要
Cpds. of formula (I):- (where R1 = 1-4C alkyl; R2 is O or (betaP)(alphaQ), where P is free, esterified or etherified OH and Q is H, alkyl, alkenyl or alkynyl (all =4C); R3 is OH, alkoxy, acyloxy, H, alkyl or acyl) are prepd. by reaction of a cpd. (II), with activated oxygen to give the DELTA6-5alpha-hydroperoxy steroid which can then be reduced to the DELTA6-5alpha-hydroxy-steroid and/or substituents introduced and posn. 17 and/or the OOH or OH gps. esterified or etherified. Oxygenation can be effected by irradiating (II) with visible or UV light in the presence of O2 and a sensitiser or by heating with a substd. phosphite-ozonide, esp. triphenyl phosphite ozonide. Cpds. (I) have progestational ovulation-inhibiting, pregnancy-maintaining and oestrogenic activity.
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机译:Cpds。式(I)的通式:-(其中R 1 = 1-4C烷基; R 2是O或(βP)(αQ),其中P是游离的,酯化或醚化的OH,并且Q是H,烷基,烯基或炔基(全部= 4C ); R 3是OH,是烷氧基,酰氧基,H,烷基或酰基。通过cpd的反应。 (II),用活化的氧得到DELTA6-5α-氢过氧类固醇,然后可以将其还原为引入和正取代的DELTA6-5α-羟基-类固醇和/或取代基。 17和/或OOH或OH gps。酯化或醚化。氧合作用可以通过在氧气和敏化剂存在下用可见光或紫外线照射(II)或通过加热来实现。亚磷酸酯-氧化物,尤其是。亚磷酸三苯酯。 Cpds。 (I)具有抑制排卵,维持妊娠和雌激素活性。
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