This review describes the additions of allylmagnesium reagents to carbonyl compounds and
to imines, focusing on the differences in reactivity between allylmagnesium halides and …

Covering: up to September 2012 Saponins are an important class of plant natural products
that consist of a triterpenoid or steroidal skeleton that is glycosylated by varying numbers of …

In the ongoing research on potent antitumor agents from the rhizomes of Asparagus
cochinchinensis, seven undescribed steroidal saponins asparagusoside A–G (1–7), along …

Herbal medicines, although significant components of health care for much of the global
populace, are still far less stringently regulated than conventional pharmaceuticals. Safety …

Kinetically controlled and organocatalytic syn-selective transfer hydrogenation has been
successfully demonstrated for the reduction of the enone functional group of various …

Sterols are compounds containing a perhydro-1, 2-cyclopentenophenanthrene ring system
and are found in a variety of different marine, terrestrial, and synthetic sources. The vast …

Phytochemical investigation of Chamaelirium luteum (“false unicorn”) resulted in the
isolation of 15 steroidal glycosides. Twelve of these (1, 2, 4–9, 11–13, and 15) are …

We report the isolation and structure elucidation of a new cheilanthane sesterterpene from
the roots of Aletris farinosa that possesses an unusual malonate half-ester functional group …

A series of novel sesterterpenes (2–6) have been isolated from the roots of Aletris farinosa
and structurally characterized by MS, NMR, and X-ray crystallography in conjunction with …

Investigation of Chamaelirium luteum roots led to the isolation of two new steroidal
saponins, helosides A (1) and B (2), that contain a previously unreported aglycone …