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Dihydroquinol and Quinol Derivatives from Ajuga parviflora

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Dihydroquinol and Quinol Derivatives from Ajuga parviflora

Erum Akbar, Hafiz Rub Nawaz, and Abdul Malik

International Centre for Chemical Sciences, H. E. J. Research Institute of Chemistry, Universityof Karachi, Karachi-75270, Pakistan

Reprints requests to Prof. A. Malik. E-mail: hej@digicom.net.pk Z. Naturforsch.56 b,842Ð846 (2001); received April 4, 2001 Ajuga parviflora, Labiatae, Dihydroquinol and Quinol Derivatives

Dihydroquinol derivative1, quinol glucopyranoside2and quinol derivative3have been isolated from the ethyl acetate soluble fraction ofAjuga parvifloraand their structures have been elucidated through spectroscopic studies as methyl 2-[2,2-dimethyl-6-oxo-7-dihydro-1,3- benzodioxol-3(6H)-yl]aceate (1), 2-hydroxy-4β-methyl-4α-(β-D-glucopyranoside)-2,5-cyclo- hexadien-1-one (2) and (4-oxo-2,5-cyclohexadien-1-yl)acetic acid (3). The known quinol 4 has also been isolated for the first time from this species.

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