Development of a Safe and Practical N-Oxidation Procedure Using m-CPBA in Acetic Acid
摘要:
A safe and practical procedure for the N-oxidation of pyrazolopyridine 4 using meta-chloroperbenzoic acid (m-CPBA) in acetic acid is described. Key safety experiments are outlined which have led to the development and implementation of this reaction on 28-kg scale in 98% isolated yield.
Development of practical syntheses of potent non-nucleoside reverse transcriptase inhibitors
作者:Jeffrey T. Kuethe、Yong-Li Zhong、Mahbub Alam、Anthony D. Alorati、Gregory L. Beutner、Dongwei Cai、Fred J. Fleitz、Andrew D. Gibb、Amude Kassim、Kathleen Linn、Danny Mancheno、Benjamin Marcune、Philip J. Pye、Jeremy P. Scott、David M. Tellers、Bangping Xiang、Nobuyoshi Yasuda、Jingjun Yin、Ian W. Davies
DOI:10.1016/j.tet.2009.03.084
日期:2009.6
The development of practical and efficient syntheses of the potent non-nucleoside reverse transcriptase inhibitors I and 2 is described. The preparation of I proceeded in four synthetic steps and in 48% overall yield from 3. The long-term synthesis of 2 proceeded in nine synthetic steps and in 47% overall yield from commercially available 2,6-diflurorpyridine. The route to 2 was highlighted by the three-step synthesis of intermediate 22 and the high yielding coupling between 18 and phenol 8. The overall sequence required no chromatography and has successfully been utilized for the manufacture of 2 on large scale. (C) 2009 Published by Elsevier Ltd.
HIV REVERSE TRANSCRIPTASE INHIBITORS
申请人:Merck & Co., Inc.
公开号:EP1910360A2
公开(公告)日:2008-04-16
REGULATED BIOCIRCUIT SYSTEMS
申请人:Obsidian Therapeutics, Inc.
公开号:US20190192691A1
公开(公告)日:2019-06-27
The present invention provides regulatable biocircuit systems. Such systems provide modular and tunable protein expression systems in support of the discovery and development of therapeutic modalities.
IDENTIFICATION AND TARGETED MODULATION OF GENE SIGNALING NETWORKS
申请人:CAMP4 THERAPEUTICS CORPORATION
公开号:US20210254056A1
公开(公告)日:2021-08-19
The present invention provides methods and compositions for the evaluation, alteration and/or optimization of gene signaling. Methods and systems are also provided which exploit the information generated in the identification of new targets and non-canonical signaling pathways.