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.
Conformation and activity of tetrahydrofuran lignans and analogs as specific platelet-activating-factor antagonists
作者:Tesfaye Biftu、Nancy F. Gamble、Thomas Doebber、San Bao Hwang、Tsung Ying Shen、James Snyder、James P. Springer、Robert Stevenson
DOI:10.1021/jm00160a020
日期:1986.10
4-dimethoxyphenyl)tetrahydrofuran and four corresponding desmethyl analogues were prepared and assayed as inhibitors of plateletactivatingfactor (PAF) receptor binding to rabbit platelet plasma membranes. The inhibition by these isomers is stereodependent and varies with the gross shape of the molecules as determined by the molecular mechanics program MM2. The most potent PAF antagonist in this group
STRUCTURAL MODIFICATION OF LIGNAN COMPOUNDS ISOLATED FROM NECTANDRA SPECIES (LAURACEAE)
作者:VÍCTOR MACÍAS-VILLAMIZAR、LUÍS CUCA-SUÁREZ
DOI:10.4067/s0717-97072017000200001
日期:——
polyalcohols, arylpropionic acid derivatives, flavonols, arylpropanoids, furofuran lignans, dihydrobenzofuran neolignans [1], and certain norlignans [2], alkaloids [3], tannins [4], diterpenes [5], and components of essential oils [6]. However, the chemotaxonomic characteristics are determined by the presence of lignan-type compounds [7]. The ultimate goal of structural modification of natural products
SCALABLE SYNTHETIC PROCESS FOR MAKING TERAMEPROCOL
申请人:Chen Qingqi
公开号:US20120029216A1
公开(公告)日:2012-02-02
A manufacturing process for making terameprocol (1) which includes the following reaction scheme, wherein a first general reaction is the formation of a furan intermediate (39) and a second general reaction is the ring-reduction and ring-opening of the furan intermediate (39) to form the terameprocol (1):