The invention provides compounds of Formula I, stereoisomers or pharmaceutically acceptable salts thereof, wherein A, B, D, R
1
, R
2
, R
4
and R
5
are defined herein, a pharmaceutical composition that includes a compound of Formula I and methods of use thereof
Cobalt(II)chloride catalysed cleavage of ethers with acyl halides: Scope and mechanism
作者:Javed Iqbal、Rajiv Ranjan Srivastava
DOI:10.1016/s0040-4020(01)96041-7
日期:1991.5
Cobalt (II) chloride in acetonitrile catalyses the cleavage of a wide variety of ethers with acyl halides under mild conditions to give the corresponding esters in good yields. Acyclic aliphatic ethers are cleaved to the corresponding ester and chlorides whereas the cyclic aliphatic ethers give rise to the ω-chloroesters. The benzyl ethers can be converted to the corresponding esters along with the
乙腈中的氯化钴(II)在温和的条件下催化多种醚与酰基卤的裂解,从而以高收率得到相应的酯。无环脂族醚裂解成相应的酯和氯化物,而环脂族醚产生ω-氯代酯。苄基醚可与苄基氯和苄基乙酰胺一起形成相应的酯。烯丙基和苄基醚裂解的比较研究表明,苄基醚可以在烯丙基醚存在下选择性裂解。可以以高度区域选择性的方式将环氧乙烷酮裂解为相应的β-氯代酯。乙烯基醚经历sp 2在这些条件下的-杂化的碳-氧键裂解。基于产物分析,讨论了涉及电子转移,随后进行O-酰化以及氯离子对S N 1或S N 2的攻击的机理。
[EN] PIPERAZINE DERIVATIVES AS MAGL INHIBITORS<br/>[FR] DÉRIVÉS DE PIPÉRAZINE UTILISÉS EN TANT QU'INHIBITEURS DE MAGL
申请人:HOFFMANN LA ROCHE
公开号:WO2019072785A1
公开(公告)日:2019-04-18
The invention provides new heterocyclic compounds having general Formula (I), or a pharmaceutically acceptable salt thereof, wherein R1, R2, X, Y1 and Y2 are as described herein, compositions including the compounds, processes of manufacturing the compounds and methods of using the compounds.
HYDROXYAMIC ANALOGS AS HEPATITIS C VIRUS SERINE PROTEASE INHIBITOR
申请人:Gai Yonghua
公开号:US20090123423A1
公开(公告)日:2009-05-14
The present invention relates to compounds of Formula I, or a pharmaceutically acceptable salt, ester, or prodrug, thereof:
which inhibit serine protease activity, particularly the activity of hepatitis C virus (HCV) NS3-NS4A protease. Consequently, the compounds of the present invention interfere with the life cycle of the hepatitis C virus and are also useful as antiviral agents. The present invention further relates to pharmaceutical compositions comprising the aforementioned compounds for administration to a subject suffering from HCV infection. The invention also relates to methods of treating an HCV infection in a subject by administering a pharmaceutical composition comprising the compounds of the present invention.
NITROIMIDAZOOXAZINE AND NITROIMIDAZOOXAZOLE ANALOGUES AND THEIR USES
申请人:Thompson Andrew Mark
公开号:US20110028466A1
公开(公告)日:2011-02-03
The current invention pertains to nitroimidazooxazine and nitroimidazooxazole analogues, their methods of preparation, and uses of the compounds as treatment for
Mycobacterium tuberculosis
, for use as anti-tubercular drugs, for use as anti-protozoal agents with unexpectedly high potency against
Trypanosoma cruzi
or
Leishmania donovani
, and for the treatment of other microbial infections.