Fluorinated and Conformationally Fixed Derivatives of <scp>l</scp>-HomoDMDP: Synthesis and Glycosidase Inhibition
作者:Yi-Xian Li、Yousuke Shimada、Isao Adachi、Atsushi Kato、Yue-Mei Jia、George W. J. Fleet、Min Xiao、Chu-Yi Yu
DOI:10.1021/acs.joc.5b00571
日期:2015.5.15
Fluorinated and conformationally fixed derivatives of l-homoDMDP, i.e., 2,5-dideoxy-2,5-imino-dl-glycero-l-manno-heptitol, have been synthesized from d-xylose-derived cyclic nitrone 10 with oxazolidinone 19 or 28 and oxazinanone 22 or 32 as key intermediates. An evaluation of glycosidase inhibition showed replacement of the C-6 hydroxyl groups with fluoride in l-homoDMDP and its C-6 epimer did not
氟化和构象的固定衍生物升-homoDMDP,即,2,5-二脱氧-2,5-亚氨基- DL-甘油-升-甘露-heptitol,已经从合成d木糖衍生的硝酮环10与恶唑烷酮19或28和恶唑烷酮22或32为关键中间体。对糖苷酶抑制作用的评估显示,在L中,氟取代了C-6羟基-homoDMDP及其C-6差向异构体对这些亚氨基糖对α-葡萄糖苷酶的抑制作用没有显着影响,而在大多数构象固定的衍生物中,用环状氨基甲酸酯基团取代氨基导致糖苷酶抑制水平急剧下降。揭示了游离氨基在酶与这些分子相互作用中的重要性。