Synthesis of Potential Glucosidase-Inhibitors:D-Xylopyranoside-5-spiro-l?-cyclopropanes
作者:Rolf Huber、Louis-Pierre Molleyres、Andrea Vasella
DOI:10.1002/hlca.19900730521
日期:1990.8.8
1′-cyclopropane 5, its methyl α-D-glycoside 7 and its benzyl β-D-glycoside 13 from D-glucose is described, and their conformation in solution is discussed. A Königs-Knorr glycosidation of 10 reveals the ionic intermediate of a 1, 1-(dibromocyclopropyl)carboxonium ion type to be stable against opening of the cyclopropane ring. Very weak inhibition of saccharase was observed for the α-D-configurated
描述了由D-葡萄糖合成D-木吡喃糖-5-螺-1'-环丙烷5,其甲基α-D-糖苷7和其苄基β-D-糖苷13,并讨论了它们在溶液中的构象。甲Königs -克诺尔的苷化10揭示了离子中间体1,1-(dibromocyclopropyl)carboxonium离子型的,以对抗环丙烷环的开口稳定。对于α-D-构型的甲基糖苷7,观察到对蔗糖酶的抑制作用非常弱,而β-D-构型的苄基糖苷13没有抑制乳化素。