the synthesis of heterocyclic analogues of neoflavonoids, such as pyrazolyl-, isoxazolyl-, pyrimidinyl-substituted 4-phenyl-2H-chromen-2-ones and fused 4-phenyl-2H,6H-pyrano[3,2-g]chromene-2,6-diones and 4-phenyl-2H,10H-pyrano[2,3-f]chromene-2,10-diones, using the corresponding enaminoketones is described. heterocycles - 4-phenyl-2H-chromen-2-one - 2H-1-benzopyran-2-one - neoflavone - enamino ketone
Synthesis and NMR spectroscopy investigations of functionalized 8,8,10-trimethyl-4-phenyl-7,8-dihydro-2H,6H-pyrano[3,2-g]chromene-2,6-diones and their spirothiadiazole derivatives
作者:Viktoria S. Moskvina、Olexander V. Turov、Volodymyr P. Khilya、Myroslav M. Garazd、Ulrich M. Groth
DOI:10.1007/s00706-008-0934-0
日期:2008.11
New functionalized derivatives of 8,8,10-trimethyl-4-phenyl-7,8-dihydro-2H,6H-pyrano[3,2-g]-chromene-2,6-dione - analogues of the natural compound graveolone - possessing hydrazine, hydroxylamine, and thiosemicarbazide residues were synthesized and their reactions with acetic anhydride were studied. The structure of the obtained compounds was confirmed by NMR spectroscopy.