A facile synthesis of benzo[b][1,4]thiazepine derivatives by palladium acetate catalyzed reaction
作者:Partha Pratim Kaishap、Kommuri Shekarrao、Pallabi Saikia、Sanjib Gogoi、Romesh C. Boruah
DOI:10.1016/j.tetlet.2014.01.153
日期:2014.3
The preparation of steroid/nonsteroid fused benzo[b][1,4]thiazepines and 2-arylsubstituted benzo[b][1,4]thiazepines is described from Pd(OAc)2 catalyzed reaction of steroidal/nonsteroidal β-halovinyl aldehydes and 2-aminothiophenols in DMF under heating condition.
由Pd(OAc)2催化甾体/非甾体β-卤代戊二醛与Pd(OAc)2的反应,描述了甾体/非甾体稠合的苯并[ b ] [1,4]硫氮杂和2-芳基取代的苯并[ b ] [1,4]硫氮杂的制备。加热条件下,DMF中的2-氨基硫酚。
One-Pot Stereoselective Synthesis of (<i>Z</i>)-β-Ketoenamides from β-Halo α,β-Unsaturated Aldehydes
作者:Junali Gogoi、Pranjal Gogoi、Romesh C. Boruah
DOI:10.1002/ejoc.201400007
日期:2014.6
β-ketoenamides have been synthesized from their corresponding β-halo α,β-unsaturatedaldehydes. This synthetic methodology provides efficient access to (Z)-β-ketoenamides. The structures of these products have been unambiguously established by single crystal XRD studies. This process is found to be mild and inexpensive. The required β-halo α,β-unsaturatedaldehydes are synthesized from corresponding ketones using
Microwave-assisted Pd-catalyzed synthesis of fused steroidal and non-steroidal pyrimidines from β-halo-α,β-unsaturated aldehydes
作者:Junali Gogoi、Pranjal Gogoi、Pranjal Bezbaruah、Romesh C. Boruah
DOI:10.1016/j.tetlet.2013.10.094
日期:2013.12
developed for the synthesis of fused steroidal and non-steroidal pyrimidines from β-halo-α,β-unsaturated aldehydes under microwave irradiation. The β-halo-α,β-unsaturated aldehydes are synthesized from corresponding ketones using Vilsmeier formylation reaction. This synthetic protocol is utilized to synthesize some more novel steroidal pyrimidine derivatives and are currently being evaluated for their biological
Palladium-Catalyzed One-Pot Sonogashira Coupling,<i>exo</i>-<i>dig</i>Cyclization and Hydride Transfer Reaction: Synthesis of Pyridine-Substituted Pyrroles
作者:Kommuri Shekarrao、Partha Pratim Kaishap、Sanjib Gogoi、Romesh C. Boruah
DOI:10.1002/adsc.201401117
日期:2015.4.13
An efficient palladium(II)‐catalyzed method for the synthesis of alkylated pyridine‐substituted pyrroles has been developed by a one‐pot three component reaction of β‐bromovinyl aldehydes, primary amines and 2‐alkynylpyridines in good yields. The reactions can also provide an efficient route to 2‐picolinoylpyrroles by slightly altering the reaction conditions.
Facile Diversity-Oriented Synthesis of Polycyclic Pyridines and Their Cytotoxicity Effects in Human Cancer Cell Lines
作者:Limi Goswami、Shyamalee Gogoi、Junali Gogoi、Rajani K. Boruah、Romesh C. Boruah、Pranjal Gogoi
DOI:10.1021/acscombsci.5b00192
日期:2016.5.9
the synthesized pyridine derivatives were evaluated for their antiproliferative properties in vitro against the human cancercell lines HeLa, Me180, and ZR751. Compounds 44,1} and 42,4} showed significant cytotoxicity in the human breast cancercell line ZR751 and cervical cancercell line Me180, respectively, and a few other compounds were found to have moderate activities.