Your browser doesn't support javascript.
Mostrar: 20 | 50 | 100
Resultados 1 - 3 de 3
Filtros adicionais

Intervalo de ano
Bioorg Med Chem Lett ; 19(22): 6477-80, 2009 Nov 15.
Artigo em Inglês | MEDLINE | ID: mdl-19804972


The solid-phase synthesis of a library based on an unusual biphenyl-containing trypsin-like serine protease inhibitor is described. Key to this effort was the synthesis of a highly functionalized aryl boronic acid reagent which required the development of a novel and efficient method to convert a triflate to a pinacolboronate in large scale.

Compostos de Bifenilo/farmacologia , Inibidores de Proteases/química , Serina Endopeptidases/efeitos dos fármacos , Ácido Aspártico/farmacologia , Inibidores da Protease de HIV/farmacologia , Mastócitos , Dados de Sequência Molecular , Biblioteca de Peptídeos , Inibidores de Proteases/farmacologia , Conformação Proteica/efeitos dos fármacos , Serina/farmacologia , Relação Estrutura-Atividade , Especificidade por Substrato
J Org Chem ; 62(3): 700-705, 1997 Feb 07.
Artigo em Inglês | MEDLINE | ID: mdl-11671467


Addition of (benzotriazol-1-yl)diethoxymethane 11 to various acyclic and cyclic enol ethers and enamides produces the corresponding adducts, which were reacted with either NaAlH(4) or Grignard reagents to afford acyclic acetal-ethers (18a-f), cyclic alpha-(substituted)-beta-acetals (19a-c), amino-acetals (24a,b), and 1,3-amino-ethers (25), all known but previously difficult-to-access classes of compounds.

J Org Chem ; 61(9): 3117-3126, 1996 May 03.
Artigo em Inglês | MEDLINE | ID: mdl-11667174


Reaction of N,N-bis[(benzotriazol-1-yl)methyl]aniline (2) with 1-vinylpyrrolidin-2-one gives a mixture of diastereomeric 1,7-bis(2-oxopyrrolidin-1-yl)julolidines 3. After reduction of 3 with LAH, the predominant trans diastereomer of 1,7-di(pyrrolidin-1-yl)julolidine (4) is separated. Reaction of 2 with ethyl vinyl ether yields predominantly trans-1,7-di(benzotriazol-1-yl)julolidine (11). Stepwise synthesis from tetrahydroquinoline 15 gives access to julolidines with two different substituents on C-1 and C-7. Reaction of 1-[(benzotriazol-1-yl)methyl]-1,2,3,4-tetrahydroquinoline (25) with enolizable aldehydes gives a mixture of tetrahydroquinolines 26-29 which are converted into single julolidine products upon treatment with sodium hydride, LAH, or phenylmagnesium bromide. Reactions of 1,2,3,4-tetrahydroquinolines with benzotriazole and 2 molar equiv of enolizable aldehydes gives 1,2,3-trisubstituted julolidines 38-41, which with lithium aluminum hydride, sodium hydride, or a Grignard reagent produce single diastereomers of products 42, 43, and 45, respectively.