Insertion of Benzynes into the P═N Bond of P-Alkenyl(alkynyl)-λ5-phosphazenes
摘要:
Benzynes, generated from 2-(trimethylsilyl)phenyl triflates, have been found to react with P-Alkenyl-lambda(5)-phosphazenes via a formal pi-insertion into the P=N bond. A subsequent retro [2 + 2] cycloaddition/6 pi electrocyclization/protonation cascade explains the formation of the resulting 1, 4-benzazaphosphorinium trifiates. P-Alkynyi lambda(5)-phosphazenes and phosphane sulfides undergo similar transformations.
An efficient and green copper(II) acetylacetonate‐catalyzed protocol for the Huisgen‐click reaction in water at 100 °C has been established. The protocol was not only suitable for the reaction between organic azides and alkynes, but also suitable for one‐pot three‐component reaction among alkyl halides, NaN3 and alkynes.
New 1,2,3-triazole-based analogues of benznidazole for use against <i>Trypanosoma cruzi</i>
infection: In vitro and in vivo evaluations
作者:Débora Inácio Leite、Fábio de Vasconcellos Fontes、Monica Macedo Bastos、Lucas Villas Boas Hoelz、Maria da Conceição Avelino Dias Bianco、Andressa Paula de Oliveira、Patricia Bernardino da Silva、Cristiane França da Silva、Denise da Gama Jean Batista、Aline Nefertiti Silva da Gama、Raiza Brandão Peres、Jose Daniel Figueroa Villar、Maria de Nazaré Correia Soeiro、Nubia Boechat
DOI:10.1111/cbdd.13333
日期:2018.9
aimed at the synthesis and the trypanocidal evaluation in vitro and in vivo of six new Bnz analogues (3–8). They were designed by exploring the bioisosteric substitution between the amide group contained in Bnz and the 1,2,3‐triazole ring. All the compounds were synthesized in good yields. With the exception of compound 7, the in vitro biologicalevaluation shows that all Bnz analogues were active against
作者:Pravin S. Patil、Sanghratna L. Kasare、Nitin B. Haval、Vijay M. Khedkar、Prashant P. Dixit、Estharla Madhu Rekha、Dharmarajan Sriram、Kishan P. Haval
DOI:10.1016/j.bmcl.2020.127434
日期:2020.10
In the present study, a series of new isoniazid embedded triazole derivatives have been synthesized. These compounds were evaluated for their in vitro antitubercular and antimicrobial activities. Among the screened compounds, six have exhibited potent antitubercular activity against Mycobacterium tuberculosis H37Rv strain with MIC value 0.78 μg/mL, whereas, three compounds have displayed activity with