Tremorgenic Indole Alkaloids. The Total Synthesis of (−)-Penitrem D
作者:Amos B. Smith、Naoki Kanoh、Haruaki Ishiyama、Noriaki Minakawa、Jon D. Rainier、Richard A. Hartz、Young Shin Cho、Haifeng Cui、William H. Moser
DOI:10.1021/ja034842k
日期:2003.7.1
A convergent, stereocontrolledtotal 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;
结构复杂的震颤吲哚生物碱 (-)-penitrem D (4) 的收敛、立体控制全合成已经实现。合成的亮点包括对西半球的高效、不对称合成;I形环的立体控制组装;发现了一种新的自动氧化,以引入震颤活动所需的 C(22) 叔羟基;充分阐述了东半球和西半球的联盟,利用专门为此目的制定的吲哚合成协议;以及利用 Sc(OTf)(3-) 促进的反应级联的 A 和 F 环的后期立体选择性构建。导致 (-)-penitrem D (4) 的最长线性序列为 43 步。
Jesus, Amelia E. de; Steyn, Pieter S.; Heerden, Fanie R. van, Journal of the Chemical Society. Perkin transactions I, 1983, # 8, p. 1857 - 1861
作者:Jesus, Amelia E. de、Steyn, Pieter S.、Heerden, Fanie R. van、Vleggaar, Robert、Wessels, Philippus L.、Hull, William E.
DOI:——
日期:——
Total Synthesis of (−)-Penitrem D
作者:Amos B. Smith、Naoki Kanoh、Haruaki Ishiyama、Richard A. Hartz
DOI:10.1021/ja0030820
日期:2000.11.1
Reconstitution of Biosynthetic Machinery for the Synthesis of the Highly Elaborated Indole Diterpene Penitrem
sequencing data, and 13 out of 17 transformations in the penitrem biosynthesis were elucidated by heterologous reconstitution of the relevant genes. These reactions involve 1) a prenylation‐initiated cationic cyclization to install the bicyclo[3.2.0]heptane skeleton (PtmE), 2) a two‐step P450‐catalyzed oxidative processes forming the unique tricyclic penitrem skeleton (PtmK and PtmU), and 3) five sequential