Stereoselective Synthesis of the Lituarine Tricyclic Spiroacetal
摘要:
Oxidative cyclizations of 2-(4-hydroxybutyl)furan derivatives provide spirobutenolide acetals directly; on the basis of this methodology, we describe an asymmetric synthesis of a tricyclic spirobutenolide precursor to the C(7-18) fragment common to lituarines A-C.
Stereoselective Synthesis of the Lituarine Tricyclic Spiroacetal
摘要:
Oxidative cyclizations of 2-(4-hydroxybutyl)furan derivatives provide spirobutenolide acetals directly; on the basis of this methodology, we describe an asymmetric synthesis of a tricyclic spirobutenolide precursor to the C(7-18) fragment common to lituarines A-C.
Rendering Schrock-type Molybdenum Alkylidene Complexes Air Stable: User-Friendly Precatalysts for Alkene Metathesis
作者:Johannes Heppekausen、Alois Fürstner
DOI:10.1002/anie.201102012
日期:2011.8.16
A matter of convenience: Schrock molybdenumalkylidenes are amongst the most powerful olefin metathesis catalysts known to date, but their sensitivity to air and moisture mandates their handling in a glove‐box or by Schlenk techniques. This inconvenience is circumvented by using the corresponding phenanthroline‐ or bipyridine adducts, which are bench‐stable and hence very user‐friendly. The active
Catalytic Enantioselective Ring-Closing Metathesis by a Chiral Biphen−Mo Complex
作者:John B. Alexander、Daniel S. La、Dustin R. Cefalo、Amir H. Hoveyda、Richard R. Schrock
DOI:10.1021/ja974353i
日期:1998.4.1
Stereoselective Synthesis of the Lituarine Tricyclic Spiroacetal
作者:Jeremy Robertson、Paul Meo、Jonathan W. P. Dallimore、Bryan M. Doyle、Christophe Hoarau
DOI:10.1021/ol0483955
日期:2004.10.1
Oxidative cyclizations of 2-(4-hydroxybutyl)furan derivatives provide spirobutenolide acetals directly; on the basis of this methodology, we describe an asymmetric synthesis of a tricyclic spirobutenolide precursor to the C(7-18) fragment common to lituarines A-C.