Chemical interaction between the aglycon and the allyl group of 6-O-allylhexopyranoside derivatives
作者:Robert J. Ferrier、David W. Hall、Paul M. Petersen
DOI:10.1016/0008-6215(93)84210-w
日期:1993.2
Abstract The free radical derived from 1- O -allyl-2,6-anhydro-3,4,7,9-tetradeoxy-8- O -phenoxythiocarbonyl- d - arabino -non-3-en-5-ulose ethylene acetal ( 4 ), in the presence of tributyltin hydride, gave the direct product of reduction ( 13 ) and also products ( 15 ), derived following tandem cyclisation, which are structurally related to the trichothecenes. In addition, evidence was found which
摘要衍生自1- O-烯丙基-2,6-脱水-3,4,7,9-四脱氧-8-O-苯氧硫羰基-d-阿拉伯-非-3-烯-5-酮乙烯缩醛的自由基( 4)在氢化三丁基锡的存在下,给出了还原的直接产物(13),以及串联环化后衍生的产物(15),其与单端孢菌烯在结构上相关。另外,发现证据表明起始自由基在分子内与烯丙基反应。为了确定糖苷配基中的自由基是否可以与己吡喃糖苷的6-烯丙基醚的烯基反应,使用了2-溴乙基2,3,4-三-O-乙酰基-6-O-烯丙基-β-d-吡喃葡萄糖苷(19)用氢化三丁基锡和自由基引发剂处理。分离出11元环产物5-羟基戊基2,3,4-三-O-乙酰基-6,5'-脱水-β-d-吡喃葡萄糖苷(21%),