Zobrazeno 1 - 10
of 52
pro vyhledávání: '"Z. I. Istomina"'
Publikováno v:
Russian Chemical Bulletin. 43:689-695
Publikováno v:
Bulletin of the Academy of Sciences of the USSR Division of Chemical Science. 31:2099-2103
The course of the reaction of Δ16-20-ketosteroids with S,S-diphenylsulfylimine depends on the substituent at position 21; it may proceed with cyclization to the 16,17α-epimino-20-ketosteroids, or with formation of 16α-substitutad S-N steroidal yli
Publikováno v:
Bulletin of the Academy of Sciences of the USSR Division of Chemical Science. 35:2392-2395
Feasibility was demonstrated for the one-step prepartion of 20-carboethoxyhydrazones of 21-hydroxy-20-ketosteroid [16α,17α]-methyloxazolines by the acetolysis of 20,20-dimethoxy-16α, 17α-epiminopregn-5-ene-3β,21-diol. This reaction is accompanie
Autor:
A. M. Turuta, Z. I. Istomina
Publikováno v:
Bulletin of the Academy of Sciences of the USSR Division of Chemical Science. 28:2139-2144
A new class of steroid compounds, namely, [16,17α-d]oxazolidin-2′-on-20-ketosteroids, was obtained by the intramolecular cyclization of the hydrazone of 16,17α-N-carboethoxy-epiminopregnenolone which occurs by opening of the aziridine ring.
Autor:
T. M. Fadeeva, A. V. Kamernitskii, Z. I. Istomina, O. N. Kruglova, Yu. T. Struchkov, A. M. Turuta, S. V. Lindeman, G. I. Gritsina, A. I. Terekhina
Publikováno v:
Pharmaceutical Chemistry Journal. 22:393-398
45 ( 1 9 8 0 ) . 4. Sh. L. Mndzhoyan, M. G. T s i n k e r , A. R. Ovakimyan, e t a l . , K h im . f a rm . Zh . , No. 3, 53-59 (1980). 5. Sh. L. Mndzhoyan, M. S. Kramer, Yu. Z. Ter-Zakharyan, and Sh. G. Oganyan, Khim.-farm. Zh., No. 4, 446-450 (1986)
Publikováno v:
Bulletin of the Academy of Sciences of the USSR Division of Chemical Science. 33:821-824
Replacement of the 21-acetate group in 3β,21-diacetoxypregna-5,16-dien-20-one by a tetrahydropyranyl group leads to reaction with S,S-diphenylsulfimine with formation of the 16,17α-aziridine.
Publikováno v:
Bulletin of the Academy of Sciences of the USSR Division of Chemical Science. 34:841-844
1. A procedure was developed for 21-hydroxylation of 16α,17α-20-ketosteroids useful for preparation of 21-hydroxy-16α,17α-epimino-20-ketosteroids.
Publikováno v:
Bulletin of the Academy of Sciences of the USSR Division of Chemical Science. 23:393-398
Publikováno v:
Bulletin of the Academy of Sciences of the USSR Division of Chemical Science. 30:499-503
Autor:
G. I. Gritsina, A. I. Poselenov, A. V. Kamernitskii, I. V. Ganina, A. D. Kareva, A. I. Terekhina, N. E. Voishvillo, I. G. Leont'ev, A. M. Turuta, Z. I. Istomina, Yu. B. Vol'kenshtein
Publikováno v:
Pharmaceutical Chemistry Journal. 10:741-745
i. Z. Weidenhoffer and S. Hala, Sb. Ved. Pr. Vys. Sk. Chemickotechnol. (Prague), D22, pp. 7-84 (1971). 2. US Patent No. 3,.450,761 (1969). 3. US Patent No. 3,450,744 (1969). 4. French Patent No. 1,588,472 (1970). 5. F.N. Stepanov, G. I. Danilenko, E.