Compounds from 14 Kenyan plants, including from the root of
Dovyalis abyssinica
and
Clutia robusta
have been characterized and isolated, and their uses are disclosed.
US8697660B2
申请人:——
公开号:US8697660B2
公开(公告)日:2014-04-15
Site-selective oxidation, amination and epimerization reactions of complex polyols enabled by transfer hydrogenation
作者:Christopher K. Hill、John F. Hartwig
DOI:10.1038/nchem.2835
日期:2017.12
for selective reactions of complex polyol structures. We present a new ruthenium catalyst with a unique efficacy for the selective oxidation of a single hydroxyl group among many in unprotected polyol natural products. This oxidation enables the introduction of nitrogen-based functional groups into such structures that lack nitrogen atoms and enables a selective alcohol epimerization by stepwise or