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Tremorgenic indole alkaloids. The total synthesis of (-)-penitrem D



Tremorgenic indole alkaloids. The total synthesis of (-)-penitrem D



Journal of the American Chemical Society 125(27): 8228-8237



A convergent, stereocontrolled total synthesis of the architecturally complex tremorgenic indole alkaloid (-)-penitrem D (4) has been achieved. Highlights of the synthesis include an efficient, asymmetric synthesis of the western hemisphere; the stereocontrolled assembly of the I-ring; discovery of a novel autoxidation to introduce the C(22) tertiary hydroxyl group, required for tremorgenic activity; union of fully elaborated eastern and western hemispheres, exploiting an indole synthetic protocol developed expressly for this purpose; and a late-stage, stereoselective construction of the A and F rings exploiting a Sc(OTf)(3-)promoted reaction cascade. The longest linear sequence leading to (-)-penitrem D (4) was 43 steps.

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Accession: 035985051

Download citation: RISBibTeXText

PMID: 12837093

DOI: 10.1021/ja034842k



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