Determining the absolute configuration of hindered secondary alcohols - a modified horeau's method
作者:David E. Barnekow、John H. Cardellina
DOI:10.1016/s0040-4039(01)80466-4
日期:1989.1
The kinetic resolution of racemic 2-phenylbutyryl chloride by hindered chiral secondaryalcohols has been shown to be a viable approach to the determination of the absoluteconfiguration of secondaryalcohols through a study of ten chiral alcohols.
Novel cytotoxic and phytotoxic halogenated sesquiterpenes from the green alga Neomeris annulata
作者:David E. Barnekow、John H. Cardellina、Andrew S. Zektzer、Gary E. Martin
DOI:10.1021/ja00192a004
日期:1989.5
The cytotoxicity and phytotoxicity observed in extracts of the calcareous greenalgaNeomerisannulata were traced to a fraction containing a trio of new halogenatedsesquiterpenes. The application of zero-quantum and reverse-detected multiple-quantum 2D NMR techniques was pivotal in the elucidation of the structures. Three different, seemingly biosynthetically related carbon skeletons, one of them