A new phloretin derivative 1 3-[2-(4-hydroxy-phenyl)-ethyl]-benzo[d] isoxazole-4,6-diol (yield 63%) was synthesized from phloretin by carbonyl nucleophilic addition condensation reaction. Its structure was characteriz...A new phloretin derivative 1 3-[2-(4-hydroxy-phenyl)-ethyl]-benzo[d] isoxazole-4,6-diol (yield 63%) was synthesized from phloretin by carbonyl nucleophilic addition condensation reaction. Its structure was characterized by 1H NMR, 13C NMR and HR-MS. The phloretin, compound 1, resveratrol and acetylated resveratrol were determined by comparing them with paclitaxel. Anti-tumor activity of alcohol on SPC-A1, EC109, A549, MCF-7 and MDA-MB-231 cell lines. Compound 1 showed better antitumor activity than docetaxel against A549 tumor cells.展开更多
A new alkaloid, named 6-（2＇,3＇-dihydroxy-4＇-hydroxymethyl-tetrahydro-furan-1＇-yl）cyclopentadiene[c]pyrrole-1,3-diol, was isolated from the seeds of Castanea mollissima Blume. The structure was elucidated based o...A new alkaloid, named 6-（2＇,3＇-dihydroxy-4＇-hydroxymethyl-tetrahydro-furan-1＇-yl）cyclopentadiene[c]pyrrole-1,3-diol, was isolated from the seeds of Castanea mollissima Blume. The structure was elucidated based on spectroscopic evidence including 2D NMR techniques.展开更多
Extraction of the soft coral Cladiella similis with 95% ethanol followed by partition between petroleum ether and water, and extensive chromatography on silica gel column eluting with petroleum ether-acetone (9.5:0.5,...Extraction of the soft coral Cladiella similis with 95% ethanol followed by partition between petroleum ether and water, and extensive chromatography on silica gel column eluting with petroleum ether-acetone (9.5:0.5, 9:1 and 8:2) afforded fractions in the part of 8:2 petroleum ether-acetone from which white crystals of a new compound, dadiellisin(1), were展开更多
文摘A new phloretin derivative 1 3-[2-(4-hydroxy-phenyl)-ethyl]-benzo[d] isoxazole-4,6-diol (yield 63%) was synthesized from phloretin by carbonyl nucleophilic addition condensation reaction. Its structure was characterized by 1H NMR, 13C NMR and HR-MS. The phloretin, compound 1, resveratrol and acetylated resveratrol were determined by comparing them with paclitaxel. Anti-tumor activity of alcohol on SPC-A1, EC109, A549, MCF-7 and MDA-MB-231 cell lines. Compound 1 showed better antitumor activity than docetaxel against A549 tumor cells.
文摘A new alkaloid, named 6-（2＇,3＇-dihydroxy-4＇-hydroxymethyl-tetrahydro-furan-1＇-yl）cyclopentadiene[c]pyrrole-1,3-diol, was isolated from the seeds of Castanea mollissima Blume. The structure was elucidated based on spectroscopic evidence including 2D NMR techniques.
基金Project supported by the National Natural Science Foundation of ChinaLaboratory of Phytochemistry, Kunming Institute of Botany, Academia Sinica
文摘Extraction of the soft coral Cladiella similis with 95% ethanol followed by partition between petroleum ether and water, and extensive chromatography on silica gel column eluting with petroleum ether-acetone (9.5:0.5, 9:1 and 8:2) afforded fractions in the part of 8:2 petroleum ether-acetone from which white crystals of a new compound, dadiellisin(1), were
