Abstract
The dependence of the CC–CO group chirality on the conformation of the α-methylene-γ-lactone ring in sesquiterpene lactones has been established; the known cases in which Geissman's rule is violated are explained by inversion of this ring.
Conformation of the α-Methylene-γ-lactone Ring and Violation of Geissman's Rule in Sesquiterpene Lactones
1995
Closed access Metadata (CSL-JSON)
How this score is calculated
It is built from checkable properties of the record itself: whether the article has a DOI, how many independent sources confirmed its data, whether the required fields are filled in, and how recent the latest confirmation is. Disagreement between sources and a missing identifier lower it. A value of 80 or above means the record was published without further checking; 60 to 79 means it is published at reduced confidence, with a manual check advisable. A record verified by an editor by hand is never pushed below 90 by a recalculation. This scores our data about the article, not the article itself.