Abstract
The total synthesis of bioactive alkaloids is an enduring challenge and an indication of the state of the art of chemical synthesis. With the explosion of catalytic asymmetric methods over the past three decades, these compelling targets have been fertile proving grounds for enantioselective bond forming transformations. These activities are summarized herein both to highlight the power and versatility of these methods and to instill future inspiration for new syntheses of these privileged natural products.
1 Introduction
2 Monoterpenoid Indole Alkaloids
2.1 Corynanthe-Type MIAs
3 Biosynthesis
4 Biological Activity
5 Scope
6 Strategies in Yohimbine Alkaloid Synthesis
6.1 Momose’s Formal Synthesis of (+)-Yohimbine
6.2 Jacobsen’s Synthesis of (+)-Yohimbine
6.3 Hiemstra’s Synthesis of (+)-Yohimbine
6.4 Qin’s Synthesis of (–)-Yohimbine
6.5 Tan’s Synthesis of (+)-Rauwolscine
6.6 Jacobsen’s Synthesis of (+)-Reserpine
6.7 Chen’s Synthesis of (+)-Reserpine
6.8 Riva’s Synthesis of (–)-Alloyohimbane
6.9 Katsuki’s Synthesis of (–)-Alloyohimbane
6.10 Ghosh’s Synthesis of (–)-Yohimbane and (–)-Alloyohimbane
6.11 Hong’s Synthesis of (–)-Yohimbane
6.12 Gellman’s Synthesis of (–)-Yohimbane
6.13 Scheidt’s Synthesis of (–)-Rauwolscine and (–)-Alloyohimbane
7 Conclusion
Key words
asymmetric synthesis - asymmetric catalysis - alkaloids - total synthesis - catalysis
