Gemäss Formelschema werden die Synthesen modifizierter Streptozotocine der Struktur 5 aus N‐Nitroso‐carbamoylaziden 3 und D‐Glucosamin, ihre α‐1,3,4,6‐Tetra‐O‐acetyl‐Derivate 6 und die vergleichsweise aus 1,3,4,6‐Tetra‐O‐acetyl‐β‐D‐glucosamin 7 hergestellten zu 6 anomeren β‐Tetraacetyl‐Derivate 9, beschrieben.
We designed and synthesized novel N-substituted 7-azaindoline derivatives as selective M1 and M4 muscarinic acetylcholine receptors (mAChRs) agonists. Hybridization of compound 2 with the HTS hit compound 5 followed by optimization of the N-substituents of 7-azaindoline led to identification of compound 1, which showed highly selective M1 and M4 mAChRs agonistic activity, weak human ether-a-go-go related
[EN] ALVOCIDIB PRODRUGS AND THEIR USE AS PROTEIN KINASE INHIBITORS<br/>[FR] PROMÉDICAMENTS DE L'ALVOCIDIB ET LEUR UTILISATION EN TANT QU'INHIBITEURS DE PROTÉINES KINASES
申请人:TOLERO PHARMACEUTICALS INC
公开号:WO2018094275A1
公开(公告)日:2018-05-24
Compounds having the following structure (I) or a stereoisomer, tautomer or pharmaceutically acceptable salt thereof, wherein R1, R2 and R3 are as defined herein, and wherein at least one of R1, R2 and R3 is not H, are provided. Pharmaceutical compositions comprising the compounds and methods for use of the compounds for treating diseases associated with overexpression of a cyclin-dependent kinase (CDK) are also provided.
A general procedure for the synthesis of alkyl and aryl alkylcarbamates starting from the corresponding S-methyl N-alkyl-thiocarbamates is described. This procedure consists of three steps that are carried out in a one-pot fashion, without isolating the intermediate N-alkylcarbamoyl chlorides or alkyl isocyanates. All the target products were obtained in high yields (16 examples, average yield 91%)
Process for the preparation of an aliphatic monoisocyanate
申请人:Bayer Aktiengesellschaft
公开号:US04146550A1
公开(公告)日:1979-03-27
This invention relates to an improved process for the preparation of an aliphatic monoisocyanate from the corresponding carbamic acid chloride. The carbamic acid chloride is reacted with an active hydrogen compound. The reaction is conducted in the presence of a solvent which is inert under the reaction conditions. Addition compounds are formed with the elimination of hydrogen chloride. The addition compounds are subsequently decomposed by heat into the desired isocyanate with the mixture also containing the active hydrogen compound. The monoisocyanate is subsequently removed by distillation.
Efficient and selective deprotection method for N-protected 2(3H)-benzoxazolones and 2(3H)-benzothiazolones
作者:Pascal Carato、Saïd Yous、Didier Sellier、Jacques H. Poupaert、Nicolas Lebegue、Pascal Berthelot
DOI:10.1016/j.tet.2004.08.070
日期:2004.11
moieties are frequently used in medicinal chemistry. The synthesis of derivatives bearing a free NH often requires the use of a protection method. A literature search reveals very few protection/deprotection methods for cyclic carbamates. In this paper, we described different methods applicable to 2(3H)-benzoxazolone and 2(3H)-benzothiazolone.