Journal ArticleDOI
Lanuginolide and dihydroparthenolide, two new sesquiterpenoid lactones from Michelia lanuginosa. The structure, absolute configuration, and a novel rearrangement of lanuginolide
TLDR
In this paper, the 8α-acetoxy-dihydroparthenolide structure of lanuginolide, isolated from the trunk bark of Michelia linuginosa wall along with dihydroparhenolate (first natural occurrence) is reported.Abstract:
Chemical and spectral evidence for the 8α-acetoxy-dihydroparthenolide structure of a new sesquiterpene lactone, lanuginolide, isolated from the trunk bark of Michelia lanuginosa Wall along with dihydroparthenolide (first natural occurrence) are reported.read more
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Journal ArticleDOI
Biogenetic Aspects of Sesquiterpene Lactone Chemistry
TL;DR: In this paper, current notions concerning the biogenesis of this large group of naturally occurring substances are discussed with emphasis on stereochemical aspects. But they do not consider the relationship between the two groups.
Journal ArticleDOI
Sesquiterpene lactones of Ambrosia chamissonis
TL;DR: A study of a large number of populations of Ambrosia chamissonis ranging from Southern California to British Columbia, has disclosed chemical differences within the species.
Book ChapterDOI
Transannular Electrophilic Cyclizations
TL;DR: It is now almost 40 years since Cope and Prelog first described the phenomenon of transannulation reactions during their independent studies of electrophilic additions to medium ring cycloalkenes as mentioned in this paper.
Journal ArticleDOI
Advances in the chemistry of sesquiterpene lactones
TL;DR: A review of the chemistry of sesquiterpene lactones can be found in this article, where the authors give a detailed discussion of the main steps in the process.
Journal ArticleDOI
Dormancy, viability and germination of Magnolia lanuginosa (Wall.) Figlar & Noot. seeds: A threatened tree species of Northeast India
TL;DR: In this article , a study was carried out to understand the type of dormancy and analyse the effect of storage on viability and germination behavior of M. lanuginosa under various physical and chemical treatments.