Pyrrole and Pyrazole Ring Closure in Heterogeneous Media
作者:F. Texier-Boullet、B. Klein、J. Hamelin
DOI:10.1055/s-1986-31655
日期:——
Pyrroles and pyrazoles may be conveniently prepared by dispersing primary amines or hydrazines and 1,4- or 1,3-diketones, respectively, on alumina or clay (montmorillonite K 10) without solvent, keeping the mixture at 20°C or higher temperatures for 1-26 h, and then eluting the product with dichloromethane.
The synthesis of N-heteroaromatic compounds via an acceptorless dehydrogenative coupling process involving direct use of ammonia as the nitrogen source was explored. We report the synthesis of pyrazine derivatives from 1,2-diols and the synthesis of N-substituted pyrroles by a multicomponent dehydrogenative coupling of 1,4-diols and primary alcohols with ammonia. The acridine-based Ru-pincer complex
Simple, Efficient and Convenient Synthesis of Pyrroles and Pyrazoles Using Zeolites.
作者:R. Sreekumar∗、Raghavakaimal Padmakumar
DOI:10.1080/00397919808006870
日期:1998.5
Abstract A convenient heterogeneous catalytic methodology for the synthesis of Pyrroles and Pyrazoles by an intermolecular reaction of γ or β-diketones with primary amines or hydrazine derivatives over zeolites are described.
Investigation of the Pentathiepin Functionality as an Inhibitor of Feline Immunodeficiency Virus (FIV) via a Potential Zinc Ejection Mechanism, as a Model for HIV Infection
作者:Christopher R. M. Asquith、Tuomo Laitinen、Lidia S. Konstantinova、Graham Tizzard、Antti Poso、Oleg A. Rakitin、Regina Hofmann‐Lehmann、Stephen T. Hilton
DOI:10.1002/cmdc.201800718
日期:2019.2.19
A small diverse library of pentathiepin derivatives were prepared to evaluate their efficacy against the nucleocapsidprotein function of the felineimmunodeficiencyvirus (FIV) as a model for HIV, using an in vitro cell culture approach. This study led to the development of nanomolar active compounds with low toxicity.
Synthesis and Identification of Pentathiepin-Based Inhibitors of Sporothrix brasiliensis
作者:Christopher R. M. Asquith、Ana C. S. Machado、Luisa H. M. de Miranda、Lidia S. Konstantinova、Rodrigo Almeida-Paes、Oleg A. Rakitin、Sandro A. Pereira
DOI:10.3390/antibiotics8040249
日期:——
Sporothrix brasiliensis is the causative agent of zoonotic sporotrichosis in Brazil and is currently referred to as the most virulent species among those of clinical importance within the genus. Sporotrichosis is an emergent disease that has come to the forefront over two decades with a recent hot spot of sporotrichosis infection emerging in the state of Rio de Janeiro. The source of these infections