A vascularization inhibitor containing a compound represented by general formula (I), wherein R₁ represents lower alkyl, alkoxycarbonyl or carboxyl; and R₂, R₃ and R₄ may be the same or different from one another and each represents hydrogen, hydroxy, methoxy or acetoxy. This compound has a significant vascularization inhibitor effect and is useful as a vascularization inhibitor for treating various diseases.
404. The constituents of natural phenolic resins. Part XXIV. A synthesis of galgravin
作者:J. G. Blears、R. D. Haworth
DOI:10.1039/jr9580001985
日期:——
US5629340A
申请人:——
公开号:US5629340A
公开(公告)日:1997-05-13
A Novel Synthetic Route to Furan-Lignans
作者:Anxin Wu、Mingyi Wang、Xinfu Pan
DOI:10.1080/00397919708006815
日期:1997.6
Abstract Three naturally occurring furan–lignans and two analogs have been synthesized by a short and efficient route starting from the corresponding aryl acid. The selective reductive removal of allylic hydroxy by palladium oxide in a mixed solvent of THF–CHCl3 was employed as the key step.
talaumidin (1). However, the preparation of opticallyactive (–)-2 requires a complicated synthetic route. To explore new neurotrophic compounds that can be obtained on a large scale, we established a short step synthetic route for talaumidin derivatives and synthesized fourteen analogues based on the structure of (–)-2. First, we synthesized a racemiccompound of (–)-2 (2a) and assessed its neurotrophic