Ontology highlight
ABSTRACT:
SUBMITTER: Hunter TJ
PROVIDER: S-EPMC6168947 | biostudies-literature | 2016 Sep
REPOSITORIES: biostudies-literature
Organic chemistry frontiers : an international journal of organic chemistry 20160712 9
An asymmetric synthesis of the <i>C</i>1 to <i>C</i>11 and <i>C</i>14 to <i>C</i>18 fragments of the macrocyclic portion of the antibiotic Leucascandrolide A was achieved in 21 total steps from an achiral dienoate. The key 4-hydroxy-2,5-pyran portion of the natural product was established by oxy-Michael cyclization of a 5,7,9,11-tetraol intermediate, which in turn was established by an iterative asymmetric-hydration of dienoates. Alternative strategies for establishing the polyol stereochemistry ...[more]