title: [Annonacins and Annonastatin from Annona squamosa].
abstract: Annonacin ( 1), annonacin A ( 6), and annonastatin ( 7) were isolated from the seeds of ANNONA SQUAMOSA L. (Annonaceae). Compounds 6 and 7 are described for the first time. The relative configuration of the tetrahydrofuran core of 1 (with hitherto unknown configuration), as well as those of compounds 6, and 7 were established by (13)C- and (1)H-NMR spectroscopy using data of the derivatives 8- 11.
authors.affiliation: Zentralbereich Zentrale Forschung der Bayer AG, D-5090 Leverkusen, Bundesrepublik Deutschland.
authors.forename: F
authors.initials: F
authors.lastname: Lieb
authors.forename: M
authors.initials: M
authors.lastname: Nonfon
authors.forename: U
authors.initials: U
authors.lastname: Wachendorff-Neumann
authors.forename: D
authors.initials: D
authors.lastname: Wendisch