论文部分内容阅读
本文研究了竹红菌乙素与巯基乙酸、正辛硫醇的反应。在室温下,在含氨水的二甲基亚砜溶液中,乙素同巯基乙酸或正辛硫醇迅速反应,主要产物为乙素母核上5位或/和8位氢被巯基化合物取代的衍生物。有氧参加反应时,还得到乙素母核氢被羟基取代的产物。这些取代产物的吸收光谱都比乙素本身明显地红移。乙素和巯基乙酸的反应产物有较好的水溶性,且保持了乙素所具有的光化学活性。文中还用UV和ESR谱,猝灭实验探讨了反应机制。
In this paper, the reaction of hypocrellin B with thioglycolic acid and n-octylthiol was studied. At room temperature, ammonia in aqueous solution of dimethyl sulfoxide, B with thioglycolic acid or n-octyl mercaptan rapid reaction, the main product of the mother nucleus B prime nucleus or / and 8 hydrogen is replaced by mercapto compounds derivative. Aerobic participation in the reaction, but also get the mother of B nuclear hydrogen hydroxy-substituted products. The absorption spectra of these substitution products are clearly red-shifted compared to the B itself. The reaction product of B and thioglycolic acid has better water solubility and maintains the photochemical activity of B. The UV and ESR spectra were also used to investigate the reaction mechanism in quenching experiments.