Transformation of ascorbigen into 1-deoxy-1-(indol-3-yl)-α-L-sorbopyranose and 1-deoxy-1-(indol-3-yl)-α-L-tagatopyranose
作者:Maria N. Preobrazhenskaya、Eduard I. Lazhko、Alexander M. Korolev、Marina I. Reznikova、Ilia I. Rozhkov
DOI:10.1016/0957-4166(96)00029-8
日期:1996.2
Ascorbigen, 2-C-[(indol-3-yl)methyl]-α-L-xylo-3-hexulofuranosonic acid γ-lactone 1a results from the interaction of 3-hydroxymethylindole and L-ascorbic acid in mild conditions. In alkaline media ascorbigen opens the lactone and furanose cycles and decarboxylates to yield a mixture of 1-deoxy-1-(indol-3-yl)-α-L-sorbopyranose 5a and 1-deoxy-1-(indol-3-yl)-α-L-tagatopyranose 6a. Formation of ascorbigen
2-C-[(吲哚-3-基)甲基]-α-L-xylo-3-hexulofuranosonicacidγ-内酯1a是在温和条件下由3-羟甲基吲哚和L-抗坏血酸相互作用产生的。在碱性介质中,抗坏血酸打开内酯和呋喃糖循环并脱羧生成1-脱氧-1-(吲哚-3-基)-α-L-山梨糖醛糖5a和1-脱氧-1-(吲哚-3-基)的混合物)-α-L-塔格吡喃糖6a。形成抗坏血酸3-O-甲基呋喃糖苷1c可稳定呋喃糖环并防止自发脱羧。2-C-[(吲哚-3-基)甲基]-α-L-xylo-3-己呋喃呋喃糖酸的二苯甲基酯和相应的3-O-甲基糖苷4a和4c被合成。对N-methylascorbigen 1b进行了类似的研究。