Synthesis and Antiallergenic Properties of 3-n-Pentadecyl- and 3-n-Heptadecylcatechol Esters
作者:Mahmoud A. EiSohlyX、Daniel A. Benigni、Lolita Torres、E. Sue Watson
DOI:10.1002/jps.2600720719
日期:1983.7
ls and their acetate and alaninate esters. The Wittig reagent prepared from 2,3-dimethoxybenzyltriphenylphosphonium bromide (III) was coupled with 1-tetradecanal or 1-hexadecanal to give the olefins IV and V, respectively. Catalytic reduction of IV and V followed by demethylation with boron tribromide afforded VIII and IX. The acetates were prepared using acetic anhydride and pyridine, while the alaninates
描述了制备3-正十五烷基和3-正十七烷基邻苯二酚及其乙酸酯和丙氨酸酯的合成方法。由2,3-二甲氧基苄基三苯基溴化((III)制得的Wittig试剂与1-四癸醛或1-十六癸醛偶合,分别得到烯烃IV和V。催化还原IV和V,然后用三溴化硼脱甲基,得到VIII和IX。使用乙酸酐和吡啶制备乙酸酯,而使用N-(叔丁氧羰基)-L-丙氨酸和二环己基碳二亚胺制备丙氨酸盐,然后用氯化氢气体除去叔丁氧羰基。这些酯在豚鼠中具有活性,可产生对毒藤型接触性皮炎的耐受性和脱敏性或超敏性。