Indolyl-oxazaphosphorine Precursors for Stereoselective Synthesis of Phosphite Triesters and Dithymidinyl Phosphorothioates
作者:Jian-Chao Wang、George Just
DOI:10.1021/jo990242l
日期:1999.10.1
7 were synthesized, and their potential as precursors to chiral phosphorothioates was evaluated. Reaction of 7 with a thymidine derivative gave phosphitetriester 8 with a large degree of stereoselectivity. Sulfurization with Beaucage's reagent provided phosphorothioate triesters 9. The chiral auxiliary 9b containing a cyano group could be easily removed with aqueous ammonia to form dithymidinyl phosphorothioate
Various asymmetric or cyclic ester derivatives of the phosphonic acid moiety in the calcium antagonist fostedil (KB-944) were synthesized. The coronary vasodilator activity of these compounds was assessed by Langendorff's method. Among them, the ethyl isopropyl ester 12 showed the most potent activity, which was comparable to that of fostedil.
[EN] METHOD OF MAKING HYDROXYMETHYLPHOSPHONATE, POLYURETHANE FOAM-FORMING COMPOSITIONS, POLYURETHANE FOAM AND ARTICLES MADE THEREFROM<br/>[FR] PROCÉDÉ DE PRÉPARATION DE PHOSPHONATE D'HYDROXYMÉTHYLE, COMPOSITIONS FORMANT UNE MOUSSE DE POLYURÉTHANE, MOUSSE DE POLYURÉTHANE ET ARTICLES FAITS DE CETTE DERNIÈRE
申请人:ICL IP AMERICA INC
公开号:WO2014062313A1
公开(公告)日:2014-04-24
There is provided herein a method of making hydroxymethylphosphonate comprising reacting paraformaldehyde, at least one dialkyl phosphite and at least one trialkyl phosphite, in the presence of at least one amine catalyst.
Phosphonic acid ester, pharmaceutical compositions containing the same
申请人:Kanebo, Ltd.
公开号:US04434162A1
公开(公告)日:1984-02-28
A phosphonic acid ester of the formula ##STR1## exhibits calcium-antagonistic, coronary vasodilating and hypotensive activities. Pharmaceutical compositions containing the same are useful for the prophylaxis and treatment of circulatory organ diseases such as angina pectoris, hypertension and the like.
METHOD OF MAKING HYDROXYMETHYLPHOSPHONATE, POLYURETHANE FOAM-FORMING COMPOSITIONS, POLYURETHANE FOAM AND ARTICLES MADE THEREFROM
申请人:ICL-IP AMERICA INC.
公开号:US20140378564A1
公开(公告)日:2014-12-25
There is provided herein a method of making hydroxymethylphosphonate comprising reacting paraformaldehyde, at least one dialkyl phosphite and at least one trialkyl phosphite, in the presence of at least one amine catalyst.