The C1—C13 fragment of amphidinolide B (1) was synthesized from D-erythrose (3). The Evans alkylation reaction protocol allowed the introduction of the stereogenic center at the C11 position, which was unambiguously confirmed by a single X-ray crystallographic analysis.
由 D-赤藓酮(3)合成了蚜虫内酯 B 的 C1-C13 片段(1)。埃文斯烷基化反应方案允许在 C11 位置引入立体中心,这一点通过一次 X 射线晶体分析得到了明确证实。