Synthesis of 2-substituted endo-hymenialdisine derivatives
摘要:
The first synthesis of 2-substituted endo-hymenialdisine derivatives 1-4 is described started with 2-substituted pyrroles and 5-substituted pyrrolo-2-carboxylic acids. (c) 2007 Published by Elsevier Ltd.
[EN] GRP94 SELECTIVE INHIBITORS AND USES THEREOF<br/>[FR] INHIBITEURS SÉLECTIFS DE GRP94 ET LEURS UTILISATIONS
申请人:UNIV KANSAS
公开号:WO2018081814A1
公开(公告)日:2018-05-03
The present technology provides compounds according to Formula I or Formula III as well as compositions including such compounds useful for the treatment of metastatic cancer and/or glaucoma.
The copper-catalyzed trifluoromethylthiolation of pyrroles with a trifluoromethanesulfonyl hypervalentiodoniumylide under mild conditions has been achieved. A broad set of pyrroles could be transformed to the corresponding products in moderate to excellent yields. The reaction mechanism is hypothesized.
A (preferably nonaqueous) method of making a dipyrromethane is described. The comprises the steps of: (a) providing a reaction system consisting essentially of an aldehyde or acetal, excess pyrrole and a catalyst; (b) reacting the aldehyde or acetal with the pyrrole in the reaction system to form the dipyrromethane therein; (c) quenching the reaction system by adding a base thereto (preferably without simultaneously or concurrently adding water and/or an organic solvent thereto); (d) separating the catalyst from the reaction system; and then (e) separating the pyrrole from the reaction system to produce the dipyrromethane as a residual
Synthesis and properties of covalently linked BF2–oxasmaragdyrin–porphyrin dyads and triad
作者:Yogita Pareek、Mangalampalli Ravikanth
DOI:10.1016/j.tet.2012.11.100
日期:2013.2
Two covalentlylinked diphenyl ethyne bridged unsymmetrical dyads containing porphyrin and BF2–oxasmaragdyrin and Zn(II)porphyrin and BF2–oxasmaragdyrin units and one covalentlylinked triad containing Zn(II)porphyrin, porphyrin and BF2–oxasmaragdyrin units were synthesized by coupling appropriate functionalized macrocycles under Pd(0) coupling reaction conditions. The dyads and triad were freely soluble
The Direct Alkylation of π-Rich, Acid-Sensitive Heterocyclic Compounds <i>via</i> Essentially Free Carbocations<sup>1</sup>
作者:Ron W. Darbeau、Emil H. White
DOI:10.1021/jo971081t
日期:1997.11.1
temperatures possible, straightforward chemistry, and excellent product balance. The majority of the cations that are generated in pyrrole (80%) are intercepted by the solvent, and only 20% are intercepted by the counterion; this result provides support for the intermediacy of nitrogen-separated ion-pairs in deamination. A nucleophilicity scale is presented for reactions of selected nucleophiles with essentially