Highly Efficient, Enantioselective Syntheses of (<i>S</i>)-(+)- and (<i>R</i>)-(−)-Dapoxetine Starting with 3-Phenyl-1-propanol
作者:Soyeong Kang、Hyeon-Kyu Lee
DOI:10.1021/jo902176s
日期:2010.1.1
intermediacy of the 6-membered-ring sulfamate esters 4, which were generated by Du Bois asymmetric C−H amination reactions of the prochiral sulfamate 3, catalyzed by the chiraldirhodium(II) complexes. During the course of our research, the absolute configuration of the enantiomer of 4-pheny[1,2,3]oxathiazinane 2,2-dioxide (4r), prepared by the Du Bois asymmetric C−H amination reaction of 3 and the
已经开发了用于合成(S)-和(R)-达泊西汀的高效对映选择性序列。所述途径涉及的6元环氨基磺酸酯的中间性4,这是由前手性的氨基磺酸杜波伊斯不对称C-H的胺化反应产生的3,通过手性二铑(II)配合物催化。在我们的研究过程中,由Du Bois 3和Rh的不对称C-H胺化反应制备的4-吩[1,2,3]恶噻嗪烷2,2-二氧化物(4r)的对映体的绝对构型2(S -nap)4催化剂,确定为R而不是最初报告的S。
A Chiral Rhodium Carboxamidate Catalyst for Enantioselective C−H Amination
作者:David N. Zalatan、J. Du Bois
DOI:10.1021/ja8031955
日期:2008.7.1
Rh2(S-nap)4, a chiraldirhodium tetracarboxamidate complex, has been developed and shown to be an effective catalyst for the asymmetric, intramolecular C-H amination of sulfamate esters. Enantiomeric excesses range from 60-99% for a collection of disparately substituted 3-arylpropylsulfamates. In addition, Rh2(S-nap)4 is found to promote chemoselective allylic C-H oxidation of unsaturated sulfamates, a property
Disclosed herein are methods of preventing or treating inflammatory diseases using sulfonamide analogs of 3-aminolactam compounds, each with aromatic "tail groups". Compounds as defined by formulae (I) and (Ι'), and the medical uses of the compounds, are described herein.
Disclosed herein are methods of preventing or treating inflammatory diseases using sulfonamide analogs of 3-aminolactam compounds, each with aromatic “tail groups”. Compounds as defined by formulae (I) and (I′), and the medical uses of the compounds, are described herein.