Mikrobiologische Umwandlung von 3‐Alkoxy‐19‐nor‐2.5(10)‐dien‐Steroiden zu 3‐Hydroxy‐5(10)‐en‐Strukturen
摘要:
AbstractSteroide mit einem 3‐Alkoxy‐2.5(10)‐dien‐System werden mikrobiologisch zu 3‐Keto‐5(10)‐en‐Strukturen gespalten und zu entsprechenden 3‐Hydroxy‐Verbindungen reduziert. Mit speziellen Hefestämmen werden ausschließlich 3β‐Hydroxy‐5(10)‐en‐Strukturen erhalten.
Rearrangement and Fragmentation of Estrogen Ether Ions: New Aspects Found with Fourier Transform Ion Cyclotron Resonance Mass Spectrometry
作者:Christoph Freudenhammer、Jürgen Grotemeyer
DOI:10.1255/ejms.1071
日期:2010.8
leading to the loss of water molecules from the protonatedmolecularion have been rationalized by using protecting groups as well as mass spectrometric means such as collision-induced dissociation and infrared multi-photon dissociation. The unexpected observation of a simultaneous loss of two water molecules from the protonated estradiol ethers and of three water molecules from the protonated estriol ethers
Demethylpenclomedine Analogs and Their Use as Anti-Cancer Agents
申请人:Morgan Lee Roy
公开号:US20090197844A1
公开(公告)日:2009-08-06
This disclosure concerns novel demethylpenclomedine analogs. Also disclosed are pharmaceutical compositions and methods for using such compositions to treat hyperproliferative disorders. In one embodiment the analogs are represented by the formula
reagents, namely, dn-alkyl sulfonium salts, dn-alkyl halides, a dn-alkyl azide, and a dn-alkyl amine, were prepared and used to efficiently introduce dn-alkyl groups into drug candidates and their analogues with complex skeletons. A liver microsomal metabolism study using 7-(d2-ethoxy)flavone as a model compound revealed a significant deuterium kinetic isotopeeffect due to the installed d2-ethoxy group
制备了多种氘化试剂,即dn-烷基锍盐、 dn-烷基卤化物、 dn-烷基叠氮化物和dn-烷基胺,并用于有效地将dn-烷基引入候选药物中,并它们的类似物具有复杂的骨架。使用 7-( d 2 -乙氧基)黄酮作为模型化合物进行的肝微粒体代谢研究表明,由于安装了d 2 -乙氧基,因此具有显着的氘动力学同位素效应。
Etabl. Roussel; zit. bei Courrier et al., Comptes Rendus des Seances de la Societe de Biologie et de Ses Filiales, 1945, vol. 139, p. 128