A convenient route to both enantiomers of endo-2-benzonorbornenol via lipase catalysed resolution of the racemic mixture
摘要:
Resolution of racemic endo-benzonorbornenol (+/-)-4 was performed using Candida antaretica lipase (Novozym" 435) in benzene (50 degreesC;50 hours) with vinyl acetate as the acyl donor to afford (-)-endo-2-benzonorbornenol (-)-6 and their corresponding (+)-endo-2-benzonorbornenyl acetate (+)-5 in high e.e.s of up to 99'% and workable yields of up to 45-46%. (C) 2001 Elsevier Science Ltd. All rights: reserved.
Cation-guest interaction within zeolites: Li+ exchanged zeolites are unique
作者:K. Pitchumani、V. Ramamurthy
DOI:10.1016/0040-4039(96)01096-9
日期:1996.7
Lithium cations present in the supercages of zeolite X and Y activate guest molecules through electrostatic interaction with the π-cloud. Such an interaction may have consequences on the reactivity-photochemical and thermal-of the guest organic molecule.
Design, synthesis, and biological evaluation of novel coxsackievirus B3 inhibitors
作者:Michal Šála、Armando M. De Palma、Hubert Hřebabecký、Radim Nencka、Martin Dračínský、Pieter Leyssen、Johan Neyts、Antonín Holý
DOI:10.1016/j.bmc.2010.04.081
日期:2010.6
(CVB3) inhibitors are reported. These compounds could be considered as the 6-chloropurines substituted at position 9 with variouslysubstituted bicyclic scaffolds (bicyclo[2.2.1]heptane/ene—norbornane or norbornene). The synthesis and biological evaluation of 31 target compounds are described. Several of the analogues inhibited CVB3 in the low micromolar range (0.66–2 μM). Minimal or no cytotoxicity was
Lithium triethylborohydride as a convenient reagent for the facile reduction of both hindered and bicyclic epoxides prone to electrophilically induced rearrangement
作者:S. Krishnamurthy、Richard M. Schubert、Herbert C. Brown
DOI:10.1021/ja00806a067
日期:1973.12
Studies of benzonorbornene and derivatives. I. Chloro- and bromobenzonorbornenes and related compounds
作者:James W. Wilt、Gustav Gutman、Walter J. Ranus、Alvin R. Zigman
DOI:10.1021/jo01279a009
日期:1967.4
Conformationally defined adrenergic agents. 8. Synthesis of conformationally defined analogs of norfenfluramine. A highly stereospecific synthesis of amines from alcohols in the benzobicyclo[2.2.1]heptene system
作者:Gary L. Grunewald、Vidyadhar M. Paradkar、Bharak Pazhenchevsky、Michael A. Pleiss、Daniel J. Sall、William L. Seibel、Thomas J. Reitz