Zobrazeno 1 - 10
of 34
pro vyhledávání: '"Pemmaraju N. Rao"'
Publikováno v:
Steroids. 73:171-183
The syntheses and antimitotic activity of several novel analogs of 2-methoxyestradiol are described. Structural modifications include ring-D homologation, aromatization of the six-membered ring-D to a chrysine type molecule, and introduction of unsat
Publikováno v:
Steroids. 73:158-170
The syntheses and antimitotic activity of several novel 18a-homo-analogs of 2-methoxyestradiol are described. Structural modifications of the parent 2-methoxy-18a-homoestradiol include introduction of unsaturation in the D-ring and methylation of the
Autor:
Pemmaraju N. Rao, C. K. Acosta, James W. Cessac, James E. Burdett, P A Morrison, M. L. Bahr, Hyun K. Kim
Publikováno v:
Steroids. 65:395-400
A new practical synthesis of 17alpha-acetoxy-11beta-(4-N, N-dimethylaminophenyl)-19-norpregna-4,9-diene-3,20-dione (CDB-2914) is described. The synthesis gives easily isolable solids at all steps and is amenable to large-scale process.
Publikováno v:
Steroids. 64:205-212
The syntheses of N-desmethyl derivatives of CDB-2914 and the mono-N-desmethyl derivative of Mifepristone are described. We also describe the use of the mono-desmethyl derivatives as substrates for the synthesis of N-tritomethyl derivatives of CDB-291
Autor:
Pemmaraju N. Rao, Zhiqiang Wang
Publikováno v:
Steroids. 62:487-490
An efficient approach to synthesize Δ 6 -estrogens is described. The key steps in the synthesis are the introduction of a hydroxyl group at the C-6 position of a suitably protected estrogen using a superbase and subsequent dehydration with Martin su
Publikováno v:
Steroids. 59:621-627
Two preparative chemical methods for aromatization of 19-nor-delta 4-3-oxosteroids are described. The first method consists of an oxidative aromatization of 19-nor-delta 4-3-oxosteroids with iodine-ceric ammonium nitrate in methanol to give a mixture
Publikováno v:
ChemInform. 22
Autor:
Hyun K. Kim, Rodolfo A. Martinez, M. L. Bahr, C. K. Acosta, Pemmaraju N. Rao, James W. Cessac, J. E. Jun. Burdett
Publikováno v:
ChemInform. 22
Publikováno v:
Steroids. 57:216-221
Synthesis of the 11α-hemiglutaryl derivative of 5α-androstane-3α,17β-diol 17-glucuronide (androstanediol-17G) starting from androsta-4, 9(11)-diene-3,17-dione through a 10-step sequence and the preparation of its bovine serum albumin conjugate is
Publikováno v:
Journal of Labelled Compounds and Radiopharmaceuticals. 28:1201-1212
The synthesis of trans-4-n-butyl-2,3-3H-cyclohexanecarboxylic acid is described. The title compound was synthesized by catalytic tritiation of 4-n-butylcyclohex-2-enecarboxylic acid, which was obtained from a “double” Birch reduction of 4-n-butyl