Steroidal nitro ketones: synthetic and stereochemical aspects
作者:Werner Rank
DOI:10.1016/s0040-4039(00)92383-9
日期:1991.9
Various steroidal nitro ketones have been synthesized in a stereocontrolled way by nitration of their respective enol acetates with trifluoroacetyl nitrate (TFAN). Their treatment with base gave products comparable to those obtained in base-catalyzed alkyl nitrate nitrations.
Steroids. CCVIII.<sup>1</sup> Ring A Modified Hormone Analogs. Part IV. 2-Chloro and 2-Halomethyl-Δ<sup>2</sup>-androstenes
作者:J. A. Edwards、P. G. Holton、J. C. Orr、L. C. Ibanez、E. Necoechea、A. De La Roz、E. Segovia、R. Urquiza、A. Bowers
DOI:10.1021/jm00338a019
日期:1963.3
Kumar, Sashi; Templeton, John F.; Zeglam, Talal Hasan, Synthetic Communications, 1984, vol. 14, # 14, p. 1333 - 1340
作者:Kumar, Sashi、Templeton, John F.、Zeglam, Talal Hasan
DOI:——
日期:——
Steroids. CCVI.<sup>1</sup> Ring A Modified Hormone Analogs. Part II. 2-Methylene Androstanes and 2-Methyl-Δ<sup>1</sup>, Δ<sup>2</sup> and Δ<sup>3</sup>-Androstenes<sup>2</sup>
作者:A. D. Cross、J. A. Edwards、J. C. Orr、B. Berköz、L. Cervantes、M. C. Calzada、A. Bowers
DOI:10.1021/jm00338a017
日期:1963.3
Synthesis and androgen receptor affisity of steroidal methylsulfonylforans and a menthylsulfonylthiophene
作者:Virendra Kumar、Sol J. Daum、Malcolm R. Bell、Michael A. Alexander、Robert G. Christiansen、James H. Ackerman、Michael E. Krolski、Carry M. Pilling、John L. Herrmann、Richard C. Winneker、Margaret M. Wagner
DOI:10.1016/s0040-4020(01)87122-2
日期:1991.1
Syntheses of the unsubstituted steroidal [3,2-b]furan (3a), thiophene (3b) and [2,3-b]furan (24) are described. Lithiation of the THP ethers 18a and 18b followed by the reaction with methyl disulfide and deprotection gave the 5'-methylsulfide derivatives 19a and 19b. Oxidation of the sulfides and ethynylation provided the compounds 2a and 2b. Swern oxidation of the [2,3-b]furan 24 with DMSO/TFAA/diisopropylethylamine resulted in oxidation to the 17-ketone and introduction of a 5'-methylthio group to give 25. Ethynylation at C-17 followed by oxidation of the sulfide group provided the product 27. 5'-Methylsulfonyl[3,2-b]furanosteroid 2a bound to the rat ventral prostate androgen receptor. However, the corresponding thiophene 2b and the [2,3-b]furan 27 lacked affinity for the receptor.