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    • 8. 发明授权
    • 20-Isocyano-.DELTA..sup.17(20) -steroids
    • 20-Isocyano-DELTA 17(20) - 类
    • US4501701A
    • 1985-02-26
    • US281552
    • 1981-07-07
    • Derek H. R. BartonWilliam B. MotherwellSammir Z. Zard
    • Derek H. R. BartonWilliam B. MotherwellSammir Z. Zard
    • C07J75/00C07F9/40C07J7/00C07J41/00C07J1/00
    • C07J41/005C07F9/4006
    • Novel 20-isocyano-.DELTA..sup.17(20) -steroids of the formula ##STR1## wherein R.sup.1 is selected from the group consisting of (1) hydrogen, (2) alkyl of 1 to 4 carbon atoms optionally substituted with a member of the group consisting of halogen, an oxygen function and a nitrogen function and (3) alkenyl and alkynyl of 2 to 4 carbon atoms, R.sub.2 is alkyl of 1 to 4 carbon atoms, Alk.sub.1, is alkyl of 1 to 8 carbon atoms and the A,B,C, and D rings may contain one or more double bonds and may be optionally substituted with at least one member of the group consisting of --OH, .dbd.0, halogens, alkyl and alkoxy of 1 to 4 carbon atoms and alkenyl and alkynyl of 2 to 4 carbon atoms and a process for their preparation and their use to prepare 17.alpha.-ol-20-keto steroids.
    • 新颖的20-异氰基-TATA 17(20) - 式Ⅰ的化合物,其中R 1选自(1)氢,(2)1至4个碳原子的烷基,任选被 由卤素,氧官能团和氮官能团组成的组,(3)2至4个碳原子的烯基和炔基,R2是1至4个碳原子的烷基,Alk1是1至8个碳原子的烷基,A, B,C和D环可以含有一个或多个双键,并且可以任选地被至少一个由-OH,= O,卤素,1-4个碳原子的烷基和烷氧基组成的组中的一个取代,以及烯基和炔基 2至4个碳原子的化合物及其制备方法及其用于制备17α-20-O-酮类固醇的方法。