Studies on the Conversions of Diols and Cyclic Ethers. Part 48. Dehydration of alcohols and diols on the action of dimethylsulfoxide
作者:Árpád Molnár、Mihály Bartók
DOI:10.1002/hlca.19810640204
日期:1981.3.18
The transformations of 13 alcohols and 13 diols in the presence of a small amount dimethylsulfoxide (1/16 mol) were studied. Relationships were found between the type of the hydroxy compound and the selectivity of the transformation, and conclusions were drawn regarding the transformation mechanism. The ether formation observed with certain alcohols proceeds via a carbenium cation. The reaction conditions
Ionic Hydrogenation with Organosilanes under Acid-Free Conditions. Synthesis of Ethers, Alkoxysilanes, Thioethers, and Cyclic Ethers via rganosilyl Iodide and Triflate Catalyzed Reductions of Carbonyl Compounds and Their Derivatives
作者:Mark B. Sassaman、G.K. Surya Prakash、George A. Olah、P. Donald、Katherine B. Loker
DOI:10.1016/s0040-4020(01)86635-7
日期:1988.1
The general ethersynthesis method based on the trialkylsilane/trialkylsilyl iodide or triflate reagent system has been extended to the syntheses of alkoxysilanes from ketones, tetrahydrofurans and tetrahydropyrans from dicarbonyl compounds, and thioethers by reductive cleavage of O-silylhemithioacetals.
Stereoselective synthesis of side chain-functionalized tetrahydropyrans from 5-hexenols
作者:Patrick Fries、Melanie Kim Müller、Jens Hartung
DOI:10.1016/j.tet.2013.12.019
日期:2014.2
products of 6-exo-bromocyclization, as exemplified by synthesis of diastereomerically pure 2,4,6-substituted tetrahydropyrans. The cobalt method extends to intermolecular alkene/alkanol cross-coupling and to multi-component reactions between dimethyl fumarate, CHD, a 5-hexenol, and dioxygen, providing α-tetrahydropyranyl-2-methyl succinates in synthetically useful yields.
TOPICAL PHARMACEUTICAL COMPOSITION INCLUDING REL-N-[6-[(2R,6S)-2,6-DIMETHYL-4-MORPHOLINYL]-3-PYRIDINYL]-2-METHYL-4'-(TRIFLUOROMETHOXY)-[1,1'-BIPHENYL]-3-CARBOXAMIDE
申请人:Fritze Andreas
公开号:US20120122866A1
公开(公告)日:2012-05-17
The present invention relates to pharmaceutical compositions of 2-Methyl-4′-trifluoromethoxy-biphenyl-3-carboxylic acid [6-(cis-2,6-dimethyl-morpholin-4-yl)-pyridin-3-yl]-amide, to the use of such compositions in therapeutic applications and to methods for manufacturing such compositions.
COMPOUNDS AND COMPOSITIONS AS HEDGEHOG PATHWAY MODULATORS
申请人:Gao Wenqi
公开号:US20120196849A1
公开(公告)日:2012-08-02
The invention provides a method for modulating the activity of the hedgehog signaling pathway. In particular, the invention provides a method for inhibiting aberrant growth states resulting from phenotypes such as Ptc loss-of-function, hedgehog gain-of-function, smoothened gain-of-function or Gli gain-of-function, comprising contacting a cell with a sufficient amount of a compound of Formula I.