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New 20(10→5) abeo ‐Diterpenoids from Pygmaeopremna herbacea
Author(s) -
Meng Qingchang,
Hesse Manfred
Publication year - 1990
Publication title -
helvetica chimica acta
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.74
H-Index - 82
eISSN - 1522-2675
pISSN - 0018-019X
DOI - 10.1002/hlca.19900730225
Subject(s) - chemistry , verbenaceae , stereochemistry , basis (linear algebra) , botany , geometry , biology , mathematics
Two new 20(10→5) abeo ‐abietune diterpenoids, pygmaeooins B ( 1 ) and C ( 2 ), have been isolated from the roots of Pygmaeopremna herbacea (Verbenaceae). Their structures were elucidated on the basis of spectroscopic data, and chemically, both compounds were correlated with each other. The absolute configurations were assigned tentatively on the basis of biogenetic pathway.