8-oxabicyclo[3.2.1]oct-6-en-3-one as a module for the synthesis of β-alkoxy-δ-valerolactones relevant to natural products and drugs
摘要:
The enantioselective synthesis of all four stereoisomeric cis-3.5 and trans-3.5-substituted beta-alkoxy-delta-valerolactones was accomplished starting from 8-oxabicyclo[3.2.1]oct-6-en-3-one. (C) 1997 Elsevier Science Ltd.
8-oxabicyclo[3.2.1]oct-6-en-3-one as a module for the synthesis of β-alkoxy-δ-valerolactones relevant to natural products and drugs
摘要:
The enantioselective synthesis of all four stereoisomeric cis-3.5 and trans-3.5-substituted beta-alkoxy-delta-valerolactones was accomplished starting from 8-oxabicyclo[3.2.1]oct-6-en-3-one. (C) 1997 Elsevier Science Ltd.
Efficient Enantioselective Synthesis of Functionalized Tetrahydropyrans by Ru-Catalyzed Asymmetric Ring-Opening Metathesis/Cross-Metathesis (AROM/CM)
作者:Dennis G. Gillingham、Osamu Kataoka、Steven B. Garber、Amir H. Hoveyda
DOI:10.1021/ja0458672
日期:2004.10.1
efficient method for enantioselectivesynthesis of highly functionalized pyrans (up to 98% ee) through Ru-catalyzed asymmetricring-opening metathesis/cross-metathesis is described. Reactions are promoted by a recyclable chiral Ru-chloride or a new chiral Ru-iodide complex; the latter catalyst is less efficient but gives rise to significantly higher levels of enantioselectivity. Catalytic reactions can be
A New Route to the Enantioselective Synthesis of Cycloheptenols. Temperature Effects in the Asymmetric Reductive Ring Opening of [3.2.1] Oxabicycloalkenes
作者:Mark Lautens、Tomislav Rovis
DOI:10.1021/ja971770m
日期:1997.11.1
Base-Induced Ring Opening of Aza- and Thiaoxa[3.2.1] and -[3.3.1]bicycles as an Enantioselective Approach to Azepines, Thiepines, and Thiocines