Dimethylsulfoxide–iodine catalysed deprotection of allyl carboxylic esters
摘要:
A convenient method for deprotection of allyl carboxylic esters has been developed by using the inexpensive and environmentally friendly reagent dimethylsulfoxide-iodine. A variety of carboxylic esters were deprotected to the carboxylic acids. This method is more efficient and operationally simple in comparison to methods using transition metal complexes. (c) 2005 Elsevier Ltd. All rights reserved.
[EN] HEPATITIS C VIRUS INHIBITORS<br/>[FR] INHIBITEURS DU VIRUS DE L'HEPATITE C
申请人:BRISTOL MYERS SQUIBB CO
公开号:WO2003099274A1
公开(公告)日:2003-12-04
Hepatitis C virus inhibitors are disclosed having the general formula:(I) wherein R1, R2, R3, R', B, Y and X are described in the description. Compositions comprising the compounds and methods for using the compounds toinhibit HCV are also disclosed.
The invention discloses compounds of Formula (I)
wherein R
1
, R
2
, R
2A
, R
3
, R
3A
, R
4
, R
4A
, and R
5
are as defined herein. The present invention relates to compounds and their use in the treatment of cystic fibrosis, methods for their production, pharmaceutical compositions comprising the same, and methods of treating cystic fibrosis by administering a compound of the invention.
[EN] BETA-SUBSTITUTED BETA-AMINO ACIDS AND ANALOGS AS CHEMOTHERAPEUTIC AGENTS AND USES THEREOF<br/>[FR] ACIDES BÊTA-AMINÉS SUBSTITUÉS EN BÊTA ET ANALOGUES À UTILISER EN TANT QU'AGENTS DE CHIMIOTHÉRAPIE ET LEURS UTILISATIONS
申请人:QUADRIGA BIOSCIENCES INC
公开号:WO2017024009A1
公开(公告)日:2017-02-09
β-Substituted β-amino acids, β-substituted β-amino acid derivatives, and β-substituted β-amino acid analogs and (bio)isosteres and their use as chemotherapeutic agents are disclosed. The β-substituted β-amino acid derivatives and β-substituted β-amino acid analogs and (bio)isosteres are selective LAT1/4F2hc substrates and exhibit rapid uptake and retention in tumors expressing the LAT1/4F2hc transporter. Methods of synthesizing the β-substituted β-amino acid derivatives and β-substituted β-amino acid analogs and methods of using the compounds for treating cancer are also disclosed. The β-substituted β-amino acid derivatives and β-substituted β-amino acid analogs exhibit selective uptake in tumor cells expressing the LAT1/4F2hc transporter and accumulate in cancerous cells when administered to a subject in vivo. The β-substituted β-amino acid derivatives and β-substituted β-amino acid analogs and (bio)isosteres exhibit cytotoxicity toward several tumor types.
Macrocyclic peptides are disclosed having the general formula:
wherein R
3
, R
3
′, R
4
, R
6
, R′, X, Q and W are described. Compositions comprising the compounds and methods for using the compounds to inhibit HCV are also disclosed.
Hepatitis C virus inhibitors having the general formula
are disclosed. Compositions comprising the compounds and methods for using the compounds to inhibit HCV are also disclosed.