Simultaneous and Stereoselective Formation of Planar and Axial Chiralities in Enantiopure Sulfinyl Iron Diene Complexes
作者:Robert S. Paley、Jane M. Liu、Bruce R. Lichtenstein、Vanessa L. Knoedler、Toby T. Sanan、Drew J. Adams、Jorge Fernández、Paul R. Rablen
DOI:10.1021/ol027306q
日期:2003.2.1
[reaction: see text] Enantiopure (1Z,3E)-1-sulfinyl dienes bearing an o-dithianylphenyl group can be prepared and complexed with (bda)Fe(CO)(3) to afford the corresponding sulfinyl dieneiron(0) tricarbonyl complexes. This diastereoselective complexation introduces planar and axial chirality simultaneously, with a high degree of facial selectivity as well as atropselectivity. Dynamic kinetic resolution
Rapid methylation of terminal acetylenes by the Stille coupling of methyl iodide with alkynyltributylstannanes: a general protocol potentially useful for the synthesis of short-lived 11CH3-labeled PET tracers with a 1-propynyl groupElectronic supplementary information (ESI) available: general experimental remarks and synthetic methods and characterization of tributylalkynylstannanes and the corresponding methylacetylenes. See http://www.rsc.org/suppdata/ob/b3/b311532a/
The Pd(0)-mediated rapidcoupling (trapping) reaction of methyliodide with an excess amount of alkynyltributylstannane has been developed with the aim to incorporate a short-lived (11)C-labeled methyl group into biologically active organic compounds with a 1-propynyl structural unit.
The pyridinium reduction route to alkaloids: a synthesis of (±)-tashiromine
作者:Roderick W. Bates、Jutatip Boonsombat
DOI:10.1039/b100407g
日期:——
An indolizidine natural product, (±)-tashiromine, has been synthesized as a single diastereoisomer by a simple protocol. The key steps of the synthesis include a heterogeneous Sonogashira reaction and a stereoelectronically controlled reduction of a bicyclic pyridinium ion.
Anomeric Oxygen to Carbon Rearrangements of Alkynyl Tributylstannane Derivatives of Lactols
作者:Marianne F. Buffet、Darren J. Dixon、Steven V. Ley、Edward W. Tate
DOI:10.1055/s-1998-1866
日期:1998.10
Treatment of alkynyl tributylstannane tetrahydropyranyl and tetrahydrofuranyl ether derivatives with boron trifluoride etherate effects an efficient anomeric oxygen to carbon rearrangement leading to the corresponding carbon-linked alkynol products.
Diphenylmethane Derivatives as Inhibitors of Leukotriene Biosynthesis
申请人:Armstrong Helen M.
公开号:US20090258885A1
公开(公告)日:2009-10-15
The instant invention provides compounds of Formula I which are 5-lipoxygenase activating protein inhibitors. Compounds of Formula I are useful as anti-atherosclerotic, anti-asthmatic, anti-allergic, anti-inflammatory, and cytoprotective agents.