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    • 1. 发明授权
    • .DELTA..sup.9(11) -5.alpha.-20-KETO STEROIDS AND PROCESS FOR THEIR
PRODUCTION
    • {66 {HU 9(11){B -5 {60 -20-KETO STEROIDS AND PROCESS FOR PRODUCRECTION
    • US4061661A
    • 1977-12-06
    • US693848
    • 1976-06-08
    • Rudolf WiechertUlrich KerbOtto Engelfried
    • Rudolf WiechertUlrich KerbOtto Engelfried
    • C07J7/00C07J1/00
    • C07J7/002
    • 3.alpha.-Hydroxy and 3.alpha.-acyloxy- .DELTA..sup.9(11) -5.alpha.-20-ketopregnenes of the formula ##STR1## wherein R is hydrogen or acyl, R.sub.1 is hydrogen or methyl and R.sub.2 is methyl or ethyl, are produced by esterifying a corresponding 3.beta.-hydroxy-5.alpha.-20-keto pregnane of the formula ##STR2## wherein R.sub.1 and R.sub.2 have the values given above, with m-iodobenzoic acid with inversion of the 3.beta.-oxy group to a 3.alpha.-oxy group; chlorinating the thus-produced 3.alpha.-m-iodobenzoyl ester with dichloroiodobenzene under irradiation; and treating the reaction product with a dehydrohalogenating silver salt. Optionally thereafter, the 3.alpha.-iodobenzoyl group is split off in a conventional manner to produce the corresponding 3.alpha.-hydroxy steroid and optionally the thus-produced 3.alpha.-hydroxy steroid is esterified to produce a desired 3-ester thereof.
    • 3α-羟基和3α-酰氧基-TATA 9(11)-5α-α-酮戊二酸,其中R是氢或酰基,R 1是氢或甲基,R 2是甲基或乙基,由 酯化相应的具有式(IMAGE)的3β-羟基-5α-20-酮孕烷,其中R1和R2具有上述给出的值,将间苯二甲酸与3β-氧基转化为3α- 氧基; 在照射下用二碘碘苯氯化如此制备的3α-碘代苯甲酰基酯; 并用脱卤化氢的银盐处理反应产物。 此后任选地,以常规方式将3α-碘代苯甲酰基分离出来以产生相应的3α-羟基类固醇,任选地,由此产生的3α-羟基类固醇被酯化以产生所需的3-酯。
    • 3. 发明授权
    • .DELTA..sup.9 (11) -5.alpha.-D-homo-20-keto steroids
    • {66 {HU 9(11){B -5 {60-D-homo-20-keto类固醇
    • US4097678A
    • 1978-06-27
    • US693847
    • 1976-06-08
    • Ulrich KerbRudolf WiechertOtto Engelfried
    • Ulrich KerbRudolf WiechertOtto Engelfried
    • C07J63/00
    • C07J63/008
    • 3.alpha.-Hydroxy and 3.alpha.-acyloxy- .DELTA..sup.9(11) -5.alpha.-D-homo-20-ketopregnenes of the formula ##STR1## wherein R is hydrogen or acyl, R.sub.1 is hydrogen or methyl and R.sub.2 is methyl or ethyl, are produced by esterifying a corresponding 3.beta.-hydroxy-5.alpha.-20-keto pregnane of the formula ##STR2## wherein R.sub.1 and R.sub.2 have the values given above, with m-iodo-benzoic acid with inversion of the 3.beta.-oxy group to a 3.alpha.-oxy group; chlorinating the thus-produced 3.alpha.-m-iodobenzoyl ester with dichloroiodobenzene under irradiation; and treating the reaction product with a dehydrohalogenating silver salt. Optionally thereafter, the 3.alpha.-iodobenzoyl group is split off in a conventional manner to produce the corresponding 3.alpha.-hydroxy steroid and optionally the thus-produced 3.alpha.-hydroxy steroid is esterified to produce a desired 3-ester thereof.
    • 3α-羟基和3α-酰氧基-TATA 9(11)-5α-D-高-20-酮戊二酸,其中R是氢或酰基,R 1是氢或甲基,R 2是甲基或乙基 通过酯化相应的具有上述给出的值的式“IMAGE”的相应的3β-羟基-5α-20-酮孕烷与通过3β-氧代反相的间 - 碘 - 苯甲酸 组成3个α氧基; 在照射下用二碘碘苯氯化如此制备的3α-碘代苯甲酰基酯; 并用脱卤化氢的银盐处理反应产物。 此后任选地,以常规方式将3α-碘代苯甲酰基分离出来以产生相应的3α-羟基类固醇,任选地,由此产生的3α-羟基类固醇被酯化以产生所需的3-酯。