A practical synthesis of long-chain iso-fatty acids (iso-C<sub>12</sub>–C<sub>19</sub>) and related natural products
作者:Mark B Richardson、Spencer J Williams
DOI:10.3762/bjoc.9.210
日期:——
Thus, the C12, C17 and C18 iso-fatty acids were obtained in three steps from commercially-available starting materials, and the remaining C13-C16 and C19 iso-fatty acids were prepared by homologation or recursive dehomologations of these fatty acids or through intercepting appropriate intermediates. Highlighting the synthetic potential of the iso-fatty acids and various intermediates prepared herein
从十一碳烯酸甲酯(十一碳烯酸甲酯)(对于异 C12-C14)或 C15 和 C16 内酯十五烷内酯开始,开发了末端支化异脂肪酸(iso-C12-C19)的克级合成(异-C15-C17)和十六烷内酯(异-C18-C19)。概述的方法的核心是通过将甲基溴化镁添加到酯/内酯和选择性还原所得叔醇来两步构建末端异丙基。因此,C12、C17 和 C18 异脂肪酸是从市售原料中分三步获得的,其余的 C13-C16 和 C19 异脂肪酸通过这些脂肪酸的同系或递归脱同系或通过拦截来制备合适的中间体。