2-(4-R-Phenoxy/phenylthio)alkanoic esters of l-lupinine
摘要:
Considering the great pharmacological interest in phenoxy/phenylthioalkanoic esters of open-chain or cyclic aminoalcohols, a set of ten such esters of lupinine was prepared. Initially, their ability to displace [H-3]QNB from rat brain preparation was investigated. With the exception of two, all the prepared esters exhibited good affinity to muscarinic receptors (on a non-selective basis), with pK(i) in the range 6.67-7.68. (C) 2001 Elsevier Science S.A. All rights reserved.
Scavenger assisted combinatorial process for preparing libraries of amides, carbamates and sulfonamides
申请人:ELI LILLY AND COMPANY
公开号:EP0825164A2
公开(公告)日:1998-02-25
This invention relates to a novel solution phase process for the preparation of amide, carbamate, and sulfonamide combinatorial libraries. These libraries have utility for drug discovery and are used to form wellplate components of novel assay kits.
A convenient synthesis of 4-phenylchalcogeno allenic esters from α-(phenylchalcogeno)acid chlorides
作者:Claudio C Silveira、Paula Boeck、Antonio L Braga
DOI:10.1016/s0040-4039(00)00067-8
日期:2000.3
The reaction of ethyl 2-(triphenylphosphoranylidene) acetate or propionate 3a–b with α-chalcogeno ketenes generated in situ by the reaction of α-chalcogeno acidchlorides 1–2 with triethylamine in dichloromethane gives moderate to good yields of 4-phenylchalcogeno allenic esters 4. The corresponding 4-phenylseleno allenic esters 4a–e were obtained in isolated yields of 60 to 93%, while 4-phenylthio
Adducts of alkyl(phenylthio)ketenes to cyclopentadiene are cleaved with KOH-t-BuOK with retention of configuration at three centers. This observation broadens the synthetic potential of the method of vicinalalkylation of olefins. This method has been used for the vicinal addition of [Cm + Cn] units to cyclopentadiene.
用KOH-t-BuOK裂解烷基(苯硫基)乙烯酮与环戊二烯的加合物,并保留三个中心的构型。该发现拓宽了烯烃的邻烷基化方法的合成潜力。该方法已用于[C m + C n ]单元的邻位加成到环戊二烯中。
Novel synthesis of sulfur-containing bicyclic β-lactams (thiaisoalkanams) using sulfur dichloride as a sulfur transfer reagent
Sulfur-containing bicyclic β-lactams having new ring systems, 6- and 7-thiaisoheptanams, were synthesized by addition of sulfurdichloride to β-lactams having two olefinic substituents, which were prepared by cycloaddition of ketenes and a 1-azadiene.