全部文献期刊学位论文会议报纸专利标准年鉴图书|学者科研项目
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作者:N. D. Pradeep Singh , R. Thirumurugan ...
来源:[J].Molecules(IF 2.428), 2000, Vol.5 (6), pp.880DOAJ
摘要:A tandem demethylation-cyclisation reaction resulting in the formation of pyran rings using AlCl3/EtSH reagent under mild reaction conditions is reported. X-ray diffraction studies on the intermediate support the suggested mechanism.
作者:Geetha Gopalakrishnan , N. D. Pradeep Singh , V. Kasinath
来源:[J].Molecules(IF 2.428), 2001, Vol.6 (6), pp.551DOAJ
摘要:Photolysis of Salannin (1), an important bioactive compound from Azadirachta indica A.Juss (Neem), affords Δ17-isosalanninolide (2), a hitherto unknown compound, along with isosalanninolide (3) and salanninolide (4). A probable mechanism has been suggested. While the...
作者:Geetha Gopalakrishnan , N. D. Pradeep Singh , V. Kasinath
来源:[J].Molecules(IF 2.428), 2002, Vol.7 (2), pp.112DOAJ
摘要:Nimonol (1), a tetranortriterpenoid isolated from the leaves of Azadirachta indica A. Juss (Meliaceae), upon photolysis undergoes both Diels-Alder and ene reactions with singlet oxygen at different sites leading to 14,15,20,21-diepoxy-23-nimonolactone (3), along with nimonol...
作者:N. D. Pradeep Singh , V. P. Santhana Krishnan ...
来源:[J].Molecules(IF 2.428), 2002, Vol.7 (5), pp.412DOAJ
摘要:A facile regio- and chemoselective bromomethoxylation of alkenes under microwave irradiation conditions employing a new polymer supported brominechloride resin is reported. The resin is prepared from the commercially available chloride resin by a simple one step procedure.
作者:V. Kasinath , N. D. Pradeep Singh , Geetha Gopalakrishnan
来源:[J].Molecules(IF 2.428), 2002, Vol.7 (2), pp.112-118DOAJ
摘要:Nimonol (1), a tetranortriterpenoid isolated from the leaves of Azadirachta indica A. Juss (Meliaceae), upon photolysis undergoes both Diels-Alder and ene reactions with singlet oxygen at different sites leading to 14,15,20,21-diepoxy-23-nimonolactone (3), along with nimonol...
作者:N. D. Pradeep Singh , Viswanathan Kasinath
来源:[J].Molecules(IF 2.428), 2000, Vol.5 (6), pp.880-885DOAJ
摘要:A tandem demethylation-cyclisation reaction resulting in the formation of pyran rings using AlCl3/EtSH reagent under mild reaction conditions is reported. X-ray diffraction studies on the intermediate support the suggested mechanism.
作者:V. Kasinath , N. D. Pradeep Singh , Geetha Gopalakrishnan
来源:[J].Molecules(IF 2.428), 2001, Vol.6 (6), pp.551-556DOAJ
摘要:Photolysis of Salannin (1), an important bioactive compound from Azadirachta indica A.Juss (Neem), affords Δ17-isosalanninolide (2), a hitherto unknown compound, along with isosalanninolide (3) and salanninolide (4). A probable mechanism has been suggested. While the...
作者:N. D. Pradeep Singh , Viswanathan Kasinath
来源:[J].Molecules(IF 2.428), 2002, Vol.7 (5), pp.412-419DOAJ
摘要:A facile regio- and chemoselective bromomethoxylation of alkenes under microwave irradiation conditions employing a new polymer supported brominechloride resin is reported. The resin is prepared from the commercially available chloride resin by a simple one step procedure.
作者:N. D. Pradeep Singh , Avijit Jana ...
来源:[J].Bioconjugate Chem., 2013ACS
摘要:We report for the first time organic nanoparticle based nuclear–targeted photoresponsive drug delivery system (DDS) for regulated anticancer drug release. Acridin–9–methanol fluorescent organic nanoparticles used in this DDS performed three important ...
作者:... Geetha Gopalakrishnan , R. Malathi , N. D. Pradeep Singh
来源:[J].Natural Product Research(IF 1.031), 1999, Vol.13 (3), pp.157-162Taylor & Francis
摘要:The spectral data of the crystalline samples of 11α-H and 11β-H epimers of Azadirachtin H is presented. 11α-H epimer is converted to the 11β-H epimer under extremely mild conditions while the reverse conversion cannot be achieved.

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