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11.
Biswanath DINDA Sudhan DEBNATH Santanu MAJUMDER Shiho ARIMA Nariko SATO Yoshihiro HARIGAYA 《中国化学快报》2006,17(10):1331-1334
Mussaenda incana Wall (Rubiaceae), an endemic medium sized tree of semi-forest regions of North Eastern States of India, is used in traditional medicine as detergent to ulcers and treatment of white leprosy1. Earlier we reported some terpenoids and iridoi… 相似文献
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S.P.N. Sudhan R. Nasir Ahmed H. Kiyani S. Sheik Mansoor 《Journal of Saudi Chemical Society》2018,22(3):269-278
A simple, green and environmentally benign procedure was developed for the one pot synthesis of 3-methyl-1,4-diphenyl-1,4,5,7-tetrahydro-pyrazolo[3,4-d]pyrimidine-6-one/thiones using catalytic amount of phthalimide-N-sulfonic acid (PISA) in 1-butyl-3-methylimidazolium bromide ([Bmim][Br]) ionic liquid via the three-component reaction of 1-phenyl-3-methyl-1H-pyrazole-5(4H)-one, aromatic aldehyde and urea/thiourea. [Bmim][Br] as reaction media offers several advantages including non-toxic, non-corrosive, shorter reaction times, high yield of the products, mild reaction conditions as well as simple experimental and isolation procedures. 相似文献