Synthesis and evaluation of analogs of Efavirenz (SUSTIVATM) as HIV-1 reverse transcriptase inhibitors
摘要:
Efavirenz (SUSTIVA(TM)) is a potent non-nucleoside reverse transcriptase inhibitor. Due to the observation of breakthrough mutations of the reverse transcriptase enzyme during Efavirenz therapy, we sought to develop an optimized second generation series. To that end, SAR of the substituents on the aromatic ring was undertaken and the results are summarized here. The 5,6-difluoro (4f) and the 6-methoxy (4m) substituted benzoxazinones were determined to be equipotent, and as a result such substitution patterns will be incorporated in second generation scaffolds. (C) 1999 DuPont Pharmaceuticals. Published by Elsevier Science Ltd. All rights reserved.
[EN] PROCESS FOR THE SYNTHESIS OF CYCLIC CARBAMATES<br/>[FR] PROCÉDÉ DE SYNTHÈSE DE CARBAMATES CYCLIQUES
申请人:LONZA AG
公开号:WO2012048884A1
公开(公告)日:2012-04-19
The invention is directed to a process for the preparation of a cyclic carbamate starting with a chiral propargylic alcohol and/or a suitable salt thereof, which is reacted with a cyclisation agent selected from phosgene, diphosgene, triphosgene and mixtures thereof, and in that the reaction is carried out in the presence of an aqueous base, and a water-immiscible organic solvent, said organic solvent mainly comprising at least one compound selected from C2-5-alkyl C2-5-carboxylates and mixtures of at least one C2-5-alkyl C2-5-carboxylate with at least one C5-8-alkane. Another aspect of the invention is directed to a process for the synthesis of said cyclic carbamate starting described above, wherein also a process for the preparation of the chiral propargylic alcohol is provided.
Design and Atroposelective Construction of IAN analogues by Organocatalytic Asymmetric Heteroannulation of Alkynes
作者:Lei Zhang、Jiahua Shen、San Wu、Guofu Zhong、Yong‐Bin Wang、Bin Tan
DOI:10.1002/anie.202010598
日期:2020.12.14
atroposelective strategy for accessing enantioenriched axially chiral IAN analogues was developed for the first time. A class of novel atropisomeric C2‐arylquinoline skeletons were synthesized with high enantiocontrol via chiral phosphoric‐acid‐catalyzed heteroannulation of in situ generated vinylidene ortho‐quinone methide (VQM) intermediates with ortho‐aminophenones. The strategy tolerated a broad
Phosphine-Catalyzed [3+2] or [4+2] Cycloaddition/S<sub>N</sub>
2 Substitution Domino Reaction of <i>ortho</i>
-Aminotrifluoroaceto- phenone Derivatives with Hex-3-yn-2-one: Preparation of Functionalized 1-Benzazepine Compounds
作者:Yao-Liang Sun、Yin Wei、Min Shi
DOI:10.1002/adsc.201700778
日期:2017.9.18
In this paper, we disclose a novel strategy for the phosphine‐catalyzed cycloaddition/SN2 substitution domino reaction, giving functionalized O‐bridged benzoazepine and benzoxazepine derivatives in moderate to good yields. Changing the N–H protecting group of ortho‐aminotrifluoroacetophenone derivatives gave different bridged‐ring products in one step.
在本文中,我们公开了膦催化的环加成/ S N 2取代多米诺反应的新策略,使官能化的O桥苯并a庚因和苯并x并庚因衍生物具有中等至良好的收率。一步改变邻氨基三氟苯乙酮衍生物的NH保护基,就可以得到不同的桥环产物。
Construction of CF<sub>3</sub>-Containing Tetrahydropyrano[3,2-<i>b</i>]indoles through DMAP-Catalyzed [4+1]/[3+3] Domino Sequential Annulation
作者:Yannan Zhu、You Huang
DOI:10.1021/acs.orglett.0c02164
日期:2020.9.4
A [4+1]/[3+3] domino sequentialannulation reaction of o-aminotrifluoroacetophenone derivatives and β′-acetoxy allenoates enabled by DMAP has been reported. A variety of CF3-containing tetrahydropyrano[3,2-b]indoles were obtained as a single diastereomer in high yields (≤98%) under mild conditions. The reaction can build one C–N bond, one C–C bond, and one C–O bond sequentially in a single step. The
已经报道了通过DMAP实现的邻氨基三氟苯乙酮衍生物和β'-乙酰氧基烯丙酸酯的[4 + 1] / [3 + 3]多米诺顺序环化反应。在温和条件下以高收率(≤98%)获得了多种含CF 3的四氢吡喃并[3,2- b ]吲哚,为单一非对映异构体。该反应可在一个步骤中依次建立一个C–N键,一个C–C键和一个C–O键。合成效用通过克级反应和产物的各种转化得到证明。