Total Synthesis of the Labdane Diterpenes Galanal A and B from Geraniol
作者:Shih-Che Lin、Rong-Jie Chein
DOI:10.1021/acs.joc.6b02766
日期:2017.2.3
The first total synthesis of galanal A and B has been achieved from naturally occurring geraniol. Key steps in this synthesis are the use of a Lewis acid assisted chiral Brønsted acid (chiral LBA) mediated cationic polyene cyclization and a titanocene-mediated radical cyclization for the asymmetric assembly of the “AB” ring and the construction of the all-carbon quaternary center at the junction of
Synthesis of Labdane Diterpenes Galanal A and B from (+)-Sclareolide
作者:Chebolu Naga Sesha Sai Pavan Kumar、Rong-Jie Chein
DOI:10.1021/ol501121v
日期:2014.6.6
The first chemical synthesis of galanal A and B was achieved by a concise and highly efficient pathway starting from commercially available (+)-sclareolide and features a Wittig reaction and a titanocene-mediated radical cyclization as the key steps.