The synthesis of 1,4-anhydro-β-D-galactopyranose (1,5-anhydro-α-D-galactofuranose), a proposed intermediate in the ring contraction isomerisation catalyzed by UDP-galactopyranose mutase, together with its [2.2.2] bicyclic methylene homologue, synthesised as a possible competitive inhibitor or alternative substrate, are reported. Neither compound was found to be an inhibitor or substrate for UDP-galactopyranose mutase from Klebsiella pneumoniae.
报道了1,4-
脱水-β-
D-半乳糖吡喃糖(1,5-
脱水-α-
D-半乳糖呋喃糖)的合成,该化合物被提议作为
UDP-半
乳糖吡喃糖变位酶催化的环收缩异构化过程中的
中间体,此外还合成了其[2.2.2]双环亚
甲基同系物,作为可能的竞争
抑制剂或替代底物。结果发现,这两种化合物均未被发现是来自肺炎克雷伯菌的
UDP-半
乳糖吡喃糖变位酶的
抑制剂或底物。