New Guaianolides and Farnesol Derivatives from Arctotis arctotoides1

S. El Dahmy; T. Sarg; S. A. Salem; J. Jakupovic; F. Bohlmann

doi:10.1055/s-2007-969186

Planta Medica, Table of Contents

Planta Med 1986; 52(5): 365-367
DOI: 10.1055/s-2007-969186

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New Guaianolides and Farnesol Derivatives from Arctotis arctotoides ¹

S. El Dahmy² , T. Sarg² , S. A. Salem² , J. Jakupovic³ , F. Bohlmann³

²Pharmacognosy Dept., Zagazig University, Egypt.
³Institute of Organic Chemistry, Technical University of Berlin, Str. d. 17. Juni 135, D-1000 Berlin 12.

1 Dedicated to Prof. Dr. J. Knabe on the occasion of his 65th birthday.

Abstract

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Abstract

The aerial parts of Arctotis arctotoides afforded eight known sesquiterpene lactones and three new ones, the 11β,13-dihydroguaianolides 9 and 10 as well as the chlorohydrine 8. Furthermore two 2Z-farnesol derivatives 12 and 13 were isolated. The structures were elucidated by highfield ¹H-NMR. The stereochemistry of several compounds has been revised.

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New Guaianolides and Farnesol Derivatives from Arctotis arctotoides 1

New Guaianolides and Farnesol Derivatives from Arctotis arctotoides ¹