Chemical investigation of the leaves from Ageratina glabrata yielded four new thymol derivatives, namely: 10-benzoyloxy-8,9-dehydro-6-hydroxythymol isobutyrate (4), 10-benzoyloxy-8,9-dehydrothymol (5), 10-benzoyloxythymol (6) and 10-benzoyloxy-6,8-dihydroxy-9-isobutyryl-oxythymol (7). In addition,
The leaves of Ageratina cylindrica afforded a thymol derivative that was characterized by physical and spectroscopical methods as (8S)-8,9-epoxy-6-hydroxy-l0-benzoyloxy-7-oxothymol isobutyrate (1). The absolute configuration of 1 was established as 8S by vibrational circular dichroism spectroscopy
From the leaves of Ageratina cylindrica, in addition to the described [(2S)-2-{4-formyl-5-hydroxy-2-[(2-methylpropanoyl)oxy]phenyl}oxiran-2-yl]methyl benzoate (cylindrinol A, 8), seven new thymol derivatives were isolated and named cylindrinols B - H (1 - 7). The structures of these compounds were
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