Terpenoid derivatives of 4-hydroxypropiophenone as juvenoids and juvenogens I.
作者:Jitka Kahovcová、Miroslav Romaňuk
DOI:10.1135/cccc19811413
日期:——
Using the reactions modifying the chemical structure of 4-(3,7-dimethyl-2,6-octadienyloxy)propiophenone and 4-(3,7-dimethyl-2-octenyloxy)propiophenone a number of potential juvenoids and juvenogens were synthetized.
[EN] PROCESS FOR THE OXIDATION OF MESITOL<br/>[FR] PROCÉDÉ D'OXYDATION DU MÉSITOL
申请人:BASF SE
公开号:WO2012107877A1
公开(公告)日:2012-08-16
The invention relates to a process for the oxidation of mesitol with singlet oxygen, which is re- leased from hydrogen peroxide, this release taking place in the presence of a bismuth com- pound as catalyst. In the process, 2,4,6-trimethylquinol is formed in high yield and selectivity as product, which can be used in further reactions for the synthesis of vitamins and in particular of vitamin A and vitamin E.
<b>Small-Ring Compounds. XXXVI. 3-Methylenecyclobutyl Bromide and 1-Methylcyclobut-2-enyl Bromide</b>
作者:Edgar F. Kiefer、John D. Roberts
DOI:10.1021/ja00864a021
日期:1962.3
3-Methylenecyclobutyl bromide and 1-methylcyclobut-2-enyl bromide have been synthesized from the cycloaddition products of allene with acrylonitrile and vinyl benzoate. The rate constants for solvolysis of the two bromides in aqueousethanol have been determined and correlated with the solvolysis rates of a series of analogous bromides. 1-Methylcyclobut-2-enyl bromide appears to exhibit some rate enhancement
The invention relates to a process for the oxidation of mesitol with singlet oxygen, which is released from hydrogen peroxide, this release taking place in the presence of a bismuth compound as catalyst. In the process, 2,4,6-trimethylquinol is formed in high yield and selectivity as product, which can be used in further reactions for the synthesis of vitamins and in particular of vitamin A and vitamin E.
Diselosed are 6-[1-hydroxyethyl)-2-SR5-1-methyl-1-carbadethiapen-2-em-3-carboxylic acid esters (I) which are oralfy active antibiotics:
wherein: R is a pharmaceutically acceptable ester moiety consistent with oral delivery; and R' is substituted or unsubstituted: alkyl, alkenyl, alkynyl, or cyclic alkyl, alkenyl, alkynyl, having 1-6 carbon atoms, aryl such as phenyl or heteroaryl such as pyridyl; wherein the substituent or substituents are selected from: phenyl, pyridyl, cyano, fluoro, chloro, hydroxy, alkylthio such as methylthio, arylthio such as phenylthio, methoxy, phenoxy, alkoxycarbonyl such as methoxycarbonyl, acetoxyl, N-methylcarbamoyl, N-methylcarbamoyloxy and N-acylamino.
Also disclosed are processes for the preparation of such compounds and pharmaceutical compositions comprising such compounds.