Certain 2-substituted 1,3-propylidenediphosphonate derivatives,
申请人:Symphar S.A.
公开号:US04696920A1
公开(公告)日:1987-09-29
2-Substituted-1,3-propylidenediphosphonates of formula (I), where A, R.sup.1 and R.sup.2 are defined in claim 1, are therapeutically active compounds, namely for the treatment of cardiovascular diseases. They can be prepared by reacting phosphonating agents with 1,3- dibromopropanes or ditosylates of 1,3-propanediols substituted in position 2. ##STR1## .
2-Substituted-1,3-propylidenediphosphonate derivatives, the process for their preparation and pharmaceutical compositions containing them
申请人:SYMPHAR S.A.
公开号:EP0173041A1
公开(公告)日:1986-03-05
2-Substituted-1,3-propylidenediphosphonates of formula (I), where A, R' and R2 are defined in Claim 1, are therapeutically active compounds, namely for the treatment of cardiovascular diseases.
They can be prepared by reacting phosphonating agents with 1,3- dibromopropanes or ditosylates of 1,3-propanediols substituted in position 2.
Thiol Esters in Organic Synthesis XVII.<sup>1</sup>S,S′-Diethyl Dithiomalonate as Masked Ethanol Carbanion and 1,3-Diol Equivalent in the Knoevenagel Condensation
作者:Patricia A. Rose、Hsing-Jang Liu
DOI:10.1080/00397919108019815
日期:1991.10
S,S'-Diethyl dithiomalonate (1) has been shown to be a useful reagent in the Knoevenagel condensation with aldehydes, using DABCO as the base. The resultant products can be reduced either to 1,3-diols by use of sodium borohydride or to ethanol derivatives using Raney Nickel.