Chemical Studies of Chinese Licorice-Roots. I. Elucidation of Five New Flavonoid Constituents from the Roots of Clycyrrhiza glabra L. Collected in Xinjiang.
in Japanese), five new flavonoid compounds named glucoliquiritin apioside (1) (a flavonone bisdesmoside), prenyllicoflavone A (5) (a bisprenylflavone), shinflavone (7) (a prenylated pyranoflavanone), shinpterocarpin (9) and 1-methoxyphaseollin (12) (both pyranopterocarpans), were isolated together with eight known saponins, seven known flavonoid glycosides, and eleven flavonoids. The structures of the
Compositions from Garcinia as Aromatase Inhibitors for Breast Cancer Chemoprevention and Chemotherapy
申请人:Balunas Marcy J.
公开号:US20090181110A1
公开(公告)日:2009-07-16
Aromatase inhibitors (AIs) are disclosed which are useful in the treatment and prevention of post-menopausal breast cancer. New AIs derived from natural products are disclosed that are evaluated for clinical utility for treating post-menopausal breast cancer and may also act as chemopreventive agents for preventing breast cancer. Several pure compounds demonstrated AI activity using a noncellular, enzyme-based microsomal and a cell-based aromatase assay. Correlations are made between structural classes with levels of aromatase inhibition. The disclosure may be utilized to direct synthetic modification of natural product scaffolds to enhance aromatase inhibition or to standardize botanical dietary supplements for increased aromatase inhibition activity.