Cyclic substituted fused pyrrolocarbazoles and isoindolones
申请人:Cephalon, Inc.
公开号:US20040186157A1
公开(公告)日:2004-09-23
The present invention is directed to cyclic substituted fused pyrrolocarbazoles and isoindolones. The invention also is directed to methods for making and using the cyclic substituted fused pyrrolocarbazoles and isoindolones.
Processes for preparing (S) or (R) epihalohydrin and an (S) substituted glycerol intermediate are disclosed.
披露了制备(S)或(R)环氧卤代丙烷和(S)取代甘油中间体的工艺过程。
Regioselective conversion of O-protected glycidols to fluorohydrins catalyuzed by tetrabutylammonium dihydrogentrifluoride under solid-liquid PTC conditions
作者:Dario Landini、Domenico Albanese、Michele Penso
DOI:10.1016/s0040-4020(01)92194-5
日期:1992.1
converted into the corresponding fluorohydrins FCH2CH(OH)CH2OX by reaction with catalytic amounts of Bu4N+H2F3- and a molar excess of KHF2. Most of the protective groups (X) examined are stable under the above conditions, moreover stereogenic carbons are not affected.
Synthesis of Medium-Sized Cyclic Amines by Selective Ring Cleavage of Sulfonylated Bicyclic Amines
作者:Fátima Iradier、Ramón Gómez Arrayás、Juan Carlos Carretero
DOI:10.1021/ol0162163
日期:2001.9.1
An efficient method of synthesis of functionalized medium-sized cyclic amines (eight- to ten-memberedrings) by selective ring opening of sulfonylated bicyclic pyrrolizidine, indolizidine, and quinolizidine compounds is described. The key step is the selective cleavage of the central C-N bond of the bicyclic amine by means of a Julia-like desulfonylation process. Reaction: see text.
Synthesis of 3-borylated cyclobutanols from epihalohydrins or epoxy alcohol derivatives
作者:Tyler R. McDonald、Sophie A. L. Rousseaux
DOI:10.1039/d2sc06088d
日期:——
There is an increasing interest in cyclobutanes within the medicinal chemistry community. Therefore, methods to prepare cyclobutanes that contain synthetic handles for further elaboration are of interest. Herein, we report a new approach for the synthesis of 3-borylated cyclobutanols via a formal [3 + 1]-cycloaddition using readily accessible 1,1-diborylalkanes and epihalohydrins or epoxy alcohol derivatives