2-Azapinanes: Aza Analogues of the Enantiomeric Pinyl Carbocation Intermediates in Pinene Biosynthesis
作者:Juan A. Faraldos、Benson M. Kariuki、Robert M. Coates
DOI:10.1021/ol1027893
日期:2011.3.4
of the pinyl carbocation intermediates in pinene biosynthesis, were synthesized from (−)- and (+)-cis-pinonic acids. The individual reactions in the 5-step sequence were Beckmann rearrangement of the pinonic acid oximes, cyclization to the N-acetyl lactams, hydrolysis to the NH-lactams, N-methylations, and LiAlH4 reductions. The anti stereochemistry of the N-methyl groups in the salts with respect
对映体 2-氮杂蒎烷是蒎烯生物合成中蒎基碳阳离子中间体的氮杂类似物,由 (-)- 和 (+)-顺式松香酸合成。5 步序列中的各个反应是松糖酸肟的贝克曼重排、环化为N-乙酰内酰胺、水解为 NH-内酰胺、N-甲基化和 LiAlH 4还原。通过 NOE 测量和 X 射线衍射分析建立了盐中N-甲基基团相对于 gem-二甲基桥的反立体化学。