1.
Org Lett
; 21(1): 18-21, 2019 01 04.
Artículo
en Inglés
| MEDLINE
| ID: mdl-30560676
RESUMEN
A new Lewis acid-assisted Brønsted acid cascade approach for the stereoselective formation of the tetracyclic Stemona alkaloid skeleton is described in five steps from epoxide 15. Crucially, this tetracyclic product can be accessed as either C13 epimer, potentially serving as intermediates for the synthesis of a range of Stemona alkaloids.
2.
Chem Commun (Camb)
; 48(74): 9230-2, 2012 Sep 25.
Artículo
en Inglés
| MEDLINE
| ID: mdl-22609828
RESUMEN
The expedient enantioselective synthesis of 5 bisabolane sesquiterpenes has been achieved using a common, one-pot lithiation-borylation reaction of secondary benzylic carbamates and either protodeboronation or oxidation to give the natural products in fewer than 5 steps, with high yield and >94 : 6 er.