📜17β-Benzoyloxy-Androst-5-En-3-One置于硫酸体系中,化学反应生成17-安息香酸雄烯醇酮 参考文献:Notes-The Direct Conversion Of Steroidal δ5-3β-Alcohols To δ5-And δ4-3-Ketones 标题:Notes-The Direct Conversion Of Steroidal δ5-3β-Alcohols To δ5-And δ4-3-Ketones 摘要: Doi:10.1021/jo01118A627
专利号:US-4219489-A 优先权日:1978-09-05 标题:Synthesis of steroids 发明人:BUNES LEONARD A; JOHNSON WILLIAM S 权利人:STANFORD LELAND JUNIOR UNIV TR 摘要:Method and compounds are provided for use in the synthesis of steroids wherein a polyolefin is provided having an initiating group having a chalcogen atom in juxtaposition to a double bond, so as to be capable of bond formation to close to form a ring and having a terminating group involving pi unsaturation (a double or triple bond) conjugated to an aromatic ring. Upon acid catalysis, sigma bonds are formed through the interaction of a carbocation formed at the carbon atom bonded to the chalcogen atom and the double bond intermediate the initiating group and the terminating group, which close to form rings of a steroid nucleus, the carbocation interacting with the pi unsaturation conjugated with the aromatic group and being captured by a nucleophile present in the acidic reaction medium. The resulting steroid product may then be modified in known ways to produce known steroids.
专利号:US-2025281509-A1 优先权日:2021-04-26 标 题 :Sequential hormone therapy to improve survival and enhance response to immune therapy in men with prostate cancer 发明人:DENMEADE SAMUEL R; ISAACS JOHN T; ANTONARAKIS EMMANUEL S; KACHHAP SUSHANT; MARKOWSKI MARK CHRISTOPHER 权利人:UNIV JOHNS HOPKINS 摘要:Disclosed are methods for treating men with castrate resistant prostate cancer with a sufficient dose of testosterone to achieve supraphysiologic serum levels of testosterone in sequence with androgen ablative treatment or androgen synthesis inhibitors for one or more cycles until evidence of radiographic progression, at which point the subject will receive immune checkpoint blockade therapy.
参考标题:Directing Group In Decarboxylative Cross-Coupling: Copper-Catalyzed Site-Selective C-N Bond Formation From Nonactivated Aliphatic Carboxylic Acids 作者:Zhao-Jing Liu,Xi Lu,Guan Wang,Lei Li,Wei-Tao Jiang,Yu-Dong Wang,Bin Xiao,Yao Fu |发布日期:2016.8.3 摘要:Copper-Catalyzed Directed Decarboxylative Amination Of Nonactivated Aliphatic Carboxylic Acids Is Described. This Intramolecular C-N Bond Formation Reaction Provides Efficient Access To The Synthesis Of Pyrrolidine And Piperidine Derivatives As Well As The Modification Of Complex Natural Products. Moreover, This Reaction Presents Excellent Site-Selectivity In The C-N Bond Formation Step Through The
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摘要:S109 | PARCEDC | List of 7074 potential endocrine disrupting compounds (EDCs) by PARC T4.2 | DOI:10.5281/zenodo.10944198