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Chemical Constituents of Euphorbia marschalliana Boiss.

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Chemical Constituents of Euphorbia marschalliana Boiss.

Amir Reza Jassbi

a,b,*

, Simin Zamanizadehnajari

b

, and Satoshi Tahara

b

a Department of Phytochemistry, Medicinal Plants Research Institute, Shahid Beheshti University, Evin, Tehran, Iran. Fax: +98-21-2 41 86 79. E-mail: a-jassbi@cc.sbu.ac.ir

b Laboratory of Ecological Chemistry, Division of Applied Bioscience, Graduate School of Agriculture, Hokkaido University, Kita-ku, Sapporo 060-8589, Japan

* Author for correspondence and reprint requests

Z. Naturforsch.59 c, 15Ð18 (2004); received April 28/June 23, 2003

Acetone extract of aerial parts ofEuphorbia marschallianacollected from Iran has been subjected to different chromatography techniques for fractionation and purification. The ste- reo-structures of the myrsinol esters 15-O-acetyl-3-O-propionyl-5-O-butanoyl-7-O-nico- tinoylmyrsinol (1) and 15-O-acetyl-3,5-O-dibutanoyl-7-O-nicotinoylmyrsinol (2) have been probed using ROESY spectroscopy and modified for the stereochemistry at C-6, C-12 and C-13.β-Sitosterol (3), 29-norcycloart-5-ene (4), 5,8-lanostadiene-3β-ol (5), 3β,24(S),25-trihy- droxycycloartane (6), 3β,24(R),25-trihydroxycycloartane (7) and 24-methylenecycloartan-3β- ol (8) were identified for the first time in this plant.

Key words: Euphorbia marschallianaBoiss., Myrsinol Ester Diterpenoids, Cycloartane Triter- penoids

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