Lewis Acid-Catalyzed Deprotection of <i>p</i>-Methoxybenzyl Ether
作者:Abderrahim Bouzide、Gilles Sauvé
DOI:10.1055/s-1997-990
日期:1997.10
The p-methoxybenzyl protecting group was readily removed from alcohols and phenols using catalytic amounts of AlCl3 or SnCl2•2H2O in the presence of EtSH at room temperature. Under these mild conditions other protecting groups such as methyl and benzyl ethers, p-nitrobenzoyl esters, TBDPS ethers and isopropylidene acetal were unchanged.
Remarkable Solvent Effect on Pd(0)-Catalyzed Deprotection of Allyl Ethers Using Barbituric Acid Derivatives: Application to Selective and Successive Removal of Allyl, Methallyl, and Prenyl Ethers
Pd(0)-catalyzed deprotection of allylethers using barbituric acid derivatives in protic polar solvent such as MeOH and aqueous 1,4-dioxane proceeds at room temperature without affecting a wide variety of functional groups. Control of the reaction temperature allows selective and successive cleavage of allyl, methallyl, and prenyl ethers. A study of ligand effects on the deprotection reveals that the
The present invention relates to a process for the preparation of organic nitrates having at least one nitryloxy and at least one hydroxy group, wherein the at least one hydroxy group may be present in form of an esterified hydroxy residue, the latter being esterified with an acid other than nitric acid.
[EN] QUINONE BASED NITRIC OXIDE DONATING COMPOUNDS FOR OPHTHALMIC USE<br/>[FR] COMPOSÉS DONNEURS D'OXYDE NITRIQUE À BASE DE QUINONE À USAGE OPHTALMIQUE
申请人:NICOX SCIENCE IRELAND
公开号:WO2014170264A1
公开(公告)日:2014-10-23
The present invention relates to nitric oxide donor compounds having a quinone based structure of formula (I), wherein R1 to R6, n, m and p are as defined in claim 1, compositions thereof and said compounds for use in the treatment and/or prophylaxis of glaucoma and ocular hypertension.
[EN] PROCESS FOR THE PREPARATION OF NITRATE ACID ESTER OF ORGANIC COMPOUNDS<br/>[FR] PROCÉDÉ POUR LA PRÉPARATION D'ESTER D'ACIDE DE NITRATE DE COMPOSÉS ORGANIQUES
申请人:NICOX SA
公开号:WO2012152438A1
公开(公告)日:2012-11-15
The present invention relates to a one-step process for the synthesis of nitric acid esters or 15N isotopically labeled nitrate esters of organic compounds starting from the correspondent alcohols. Formula (I).