A convenient 1,3-dipolar cycloaddition–reduction synthetic sequence from 2-allyloxy-5-nitro-salicylaldehyde to aminobenzopyran-annulated heterocycles
作者:Narsidas J. Parmar、Bhavesh R. Pansuriya、Balvantsingh M. Labana、Rajni Kant、Vivek K. Gupta
DOI:10.1039/c3ra42220h
日期:——
A microwave-assisted, one-pot synthesis of some nitro benzopyran-annulated pyrroles as well as pyrrolo-fused isoquinolines via a 1,3-dipolar cycloaddition, which involves the in situ generation of azomethine ylide formed by reacting secondary amines with 2-allyloxy-5-nitro-salicylaldehyde, has been achieved in a solvent-free environment. Compared to methods of conventional and thermal heating, the present microwave-assisted method is rapid and highly efficient. In addition, amino analogous heterocycles were successfully accessed after treating the reaction mass further with iron in acidic medium, which also highlights a one-pot procedure for a new 1,3-dipolar cycloadditionâreduction synthetic sequence. All amino-products are new bioprofiles and anticipated to be effective drug-like candidates. All compounds were characterised based on their elemental analysis, mass, IR, and 1H and 13C NMR spectroscopic data. The stereochemistry of the product was confirmed by 2D NMR COSY and NOESY experiments, which, on the basis of single crystal X-ray diffraction data analysis, was further confirmed and supported.
OXADIAZOLINE COMPOUND OR SALT THEREOF, AGRICULTURAL OR HORTICULTURAL BACTERICIDE CONTAINING SAID COMPOUND, AND USE METHOD THEREFOR
申请人:Nihon Nohyaku Co., Ltd.
公开号:EP3835290A1
公开(公告)日:2021-06-16
Development of a novel agricultural or horticultural bactericide is desired because considerable damage by diseases is still caused to agricultural and horticultural production and the like and because of, for example, damage by diseases resistant to conventional chemicals.
The present invention provides an agricultural or horticultural bactericide and a use method therefor, the bactericide including, as an active ingredient, a compound represented by general formula (I) or a salt thereof:
[In formula (I), X1, X2, X3, and X4 each represent a hydrogen atom, etc.; A, B, and Y each represent a single bond, a carbonyl group, etc.; Q represents a C1-6 alkyl group, a heterocycle, etc.; and R5 and R6 each represent a hydrogen atom, a C1-6 alkyl group, etc.]
An improved microwave assisted one-pot synthesis, and biological investigations of some novel aryldiazenyl chromeno fused pyrrolidines
作者:Narsidas J. Parmar、Bhavesh R. Pansuriya、Hitesh A. Barad、Rajni Kant、Vivek K. Gupta
DOI:10.1016/j.bmcl.2012.04.070
日期:2012.6
An improved microwave assisted one-pot method for the synthesis of twelve new aryldiazenylchromeno [4,3-b] pyrrolidines via intramolecular azomethine ylide cycloaddition route is described. The method is efficient and advantageous over conventional and solvent-free thermal methods. The stereochemistry of the compounds was confirmed on the basis of various NMR experiments, and finally by single crystal
描述了一种改进的微波辅助一锅法,该方法通过分子内偶氮甲碱内酯环加成路线合成了十二种新的芳基二氮烯基壬二烯基[4,3- b ]吡咯烷。该方法比常规的和无溶剂的热方法有效且有利。基于各种NMR实验,并最终通过单晶X射线衍射数据,证实了化合物的立体化学。基于N-甲基或乙基吡咯烷的杂环具有良好的生物学活性。
Efficient synthesis of some new antiproliferative N-fused indoles and isoquinolines via 1,3-dipolar cycloaddition reaction in an ionic liquid
作者:Tushar R. Sutariya、Balvantsingh M. Labana、Narsidas J. Parmar、Rajni Kant、Vivek K. Gupta、Gabriela B. Plata、José M. Padrón
DOI:10.1039/c4nj02308k
日期:——
Syntheses of some new pyrrolo-fused pyrrolo[1,2-a] indole derivatives have been achieved by combining N-allyl-indole-2-carbaldehyde with a variety of N-alkyl-glycine esters as well as tetrahydroisoquinolines in an ionic liquid, triethylammonium acetate (TEAA), a recyclable reaction medium, via intramolecular [3+2] cycloaddition reaction. This new method is highly efficient, and the ionic liquid employed
通过在离子液体中将N-烯丙基-吲哚-2-甲醛与各种N-烷基-甘氨酸酯以及四氢异喹啉结合,可以合成一些新的吡咯并稠合的吡咯并[1,2- a ]吲哚衍生物。通过分子内[3 + 2]环加成反应可回收的反应介质乙酸三乙铵(TEAA)。这种新方法效率很高,而且所用的离子液体是可回收的。所有化合物的立体化学均通过2D NMR NOESY和在某些情况下的单晶X射线衍射数据证实。在体外 针对各种细菌菌株和具有代表性的人类实体瘤细胞系A549(肺),HeLa(子宫颈),SW1573(肺),T-47D(乳腺癌)和WiDr(结肠)进行了所有候选筛选,发现其中许多具有良好的抗菌,抗真菌,抗结核和抗增殖活性。