Open AccessFranserin and confertin: new pseudoguaianolides isolated from franseria and ambrosia species
Author(s) -
J. Romo,
Alfonso Romo de Vivar,
Alberto L. Vélez,
E. Urbina
Publication year - 1968
Publication title -
canadian journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.323
H-Index - 68
eISSN - 1480-3291
pISSN - 0008-4042
DOI - 10.1139/v68-251
Subject(s) - ambrosia , chemistry , stereochemistry , botany , biology , pollen
Two pseudoguaianolides were isolated from Franseria ambrosioides Cav.: damsin of known structure and franserin whose constitution was established as a 10-hydroxytetrahydroambrosin (2). From Ambrosia confertiflora DC. were isolated the known desacetylconfertiflorin (12) and confertin, a new lactone found also as constituent of Ambrosia tenuifolia Harv et Gray. It was identified as the ketolactone 9 previously prepared from cumanin (11).
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