作者:Hanley N. Abramson、Henry C. Wormser
DOI:10.1002/jhet.5570180227
日期:1981.3
been achieved by condensation of methylmalonyl dichloride with ethyl trans-4-methyl-3-oxo-4-hexenoate followed by hydrolysis, decarboxylation, and methylation of the resulting 3-methyl-4-hydroxy-5-carbethoxy-6-(trans-1-methyl-1-propenyl)-2-pyrone. Exploration of an alternate scheme involving the dehydrogenation of 6-substituted-4-methoxy-5,6-dihydro-2-pyrones, prepared by Reformatsky reaction of ethyl
通过将二甲基丙二酰二氯与反式-4-甲基-3-氧代-4-己酸乙酯缩合,然后水解,脱羧和甲基化所得的3-甲基,可实现合成抗菌真菌代谢物油桃吡喃酮(1)的全合成途径。-4-羟基-5-乙氧基-6-(反式-1-甲基-1-丙烯基)-2-吡喃酮。由于没有进行通过γ-溴-β-甲氧基巴豆酸乙酯的Reformatsky反应制备的6-取代的4-甲氧基-5,6-二氢-2-吡喃酮脱氢的替代方案的探索,因此没有被探索。似乎对油桃吡喃酮及其类似物的制备具有普遍适用性。