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Asymmetric synthesis of: Trans -4,5-disubstituted γ-butyrolactones involving a key allylboration step. First access to (-)-nicotlactone B and (-)-galbacin

Henrion, S.; Macé, A.; Vallejos, Margarita; Roisnel, T.; Carboni, B.; Villalgordo, J.M.; Carreaux, Francois (Royal Society of Chemistry, 2018-02)

An efficient asymmetric synthesis of trans-4,5-disubstituted γ-butyrolactones from aldehydes and enantioenriched γ-carbamate alkenylboronates is reported. The cornerstone of this strategy is the implementation of sequential ...

Aryltetralone lignans and 7,8-seco-lignans from Holostylis reniformis

Universidade Estadual Paulista (Unesp) (2004-03-01)

Aryltetralone lignans and two 7,8-seco-lignans were isolated from the acetone and hexane extracts of the roots of Holostylis reniformis, together with (-)-galbacin. Their structures were determined by spectroscopic methods. ...