Results 141 to 150 of about 281 (158)
Some of the next articles are maybe not open access.
Photoreactions of hypocrellin B with thiol compounds
Journal of Photochemistry and Photobiology B: Biology, 1998Abstract The photoreactions of hypocrellin B (HB) with thiol compounds (RSH) in ethanol buffer solutions have been investigated by electron spin resonance (ESR), α-phenyl-N-tert-butyl nitrone (PBN) spin trapping and quenching experiments. The mechanism of photothiylation of HB is proposed to involve a nucleophilic anion (RS−) addition of Michael type
Yu-Ying He +3 more
openaire +1 more source
Photochemical properties of hypocrellin A, B and their oxides
Chinese Journal of Chemistry, 1990AbstractHypocrellin A and B in methanol were autosensitized and photooxygenated to 1, 4, 6, 7 and 2, 5, 8, 9 respectively. 1 in methanol was photooxygenated to 6 and 7 under the sensitization by HB. 1 in methanol was photooxygenated to 7 under the sensitization by Rose bengal.
Kai‐Hong Zhao, Li‐Jin Jiang
openaire +1 more source
Synthesis and ESR investigation of hypocrellin glycoside
Tetrahedron Letters, 1998Abstract A glycoside derived from hypocrellin B was designed and synthesized using an improved Konigs-Knorr reaction. The water-solubility and red absorption of the resulting product was enhanced significantly over hypocrellin B. Electron spin resonance (ESR) measurements indicated that this glycoside remained photodynamically active in terms of Type
Yu-Ying He, Jing-Yi An, Li-Jin Jiang
openaire +1 more source
THE EFFECTS OF ENVIRONMENTS ON THE FLUORESCENCE SPECTRUM OF HYPOCRELLIN A
Acta Physico-Chimica Sinica, 1989Diwu Zhenjun, Jiang Lijin, Zhang Manhua
openaire +1 more source