A stereocontrolled route to 2-substituted chromans
作者:Kevin J Hodgetts
DOI:10.1016/s0040-4039(00)01530-6
日期:2000.10
A two-step synthesis of 2-substituted chromans of high enantiomeric purity is described. Mitsunobu reaction of homochiral halopropanols 10 with 2-bromophenol (9), followed by treatment with n-butyllithium under Parham cycloalkylation conditions generates 2-substituted chromans 7. The methodology was applied to the synthesis of the natural product tephrowatsin E (5) and the antiviral BW683C (6).
A novel class of tetracyclic compounds is disclosed together with the use of such compounds for inhibiting sPLA2 mediated release of fatty acids for treatment of Inflammatory Diseases such as septic shock.
[EN] PYRIDAZINE-CONTAINING COMPOUND AND MEDICINAL USE THEREOF<br/>[FR] COMPOSÉ CONTENANT DE LA PYRIDAZINE ET SON UTILISATION MÉDICINALE<br/>[ZH] 一类含哒嗪的化合物及其医药用途