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Transient Expression in Nicotiana Benthamiana Leaves for Triterpene Production at a Preparative Scale
Published on: August 16, 2018
New Sesquiterpene Lactones from Montanoa tomentosa subsp. xanthiifolia*
A Lidia-Pérez1, M B Caballero, A Ortega
1Instituto de Química, Universidad Nacional Autónoma de México, Ciudad Universitaria, Circuito Exterior, Coyoacán, 04510 México, D.F.
Abstract:
A chemical examination of MONTANOA TOMENTOSA subsp. XANTHIIFOLIA afforded in addition to some known compounds, four new sesquiterpene lactones: 4beta,5alpha-epoxy-8alpha-isobutyryloxy- TRANS-germacr-1(10)-en-12,6beta-olide ( 1A), 4beta,5alpha-epoxy-7alpha-hydroxy-8alpha-isobutyryloxy- TRANS-germacr-1(10)-en-12,6beta-olide ( 1B), (1 R,4 S)-1,5-cyclo-5alpha-hydroxy-8alpha-isobutyryloxy-7alpha, 10alpha-oxagermacran-12,6beta-olide ( 2A), and 4beta-hydroxy-8alpha-isobutyryloxy-7alpha,10alpha-oxaguaian-12,6beta-olide ( 3). The structures were determined mainly by spectroscopic methods. The structure of 1B was confirmed by an X-ray analysis.
