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Total Synthesis of Bryostatin 1

Total Synthesis of Bryostatin 1. Brittany Wheeler Chemistry Department University of Maryland. J. Am. Chem. Soc. Keck, G. E.; Poudel , Y. B.; Cummins, T. J.; Rudra , A.; Covel , J.A. 2011, 133, 744-747. Gary E. Keck. Professor at the University of Utah, Salt Lake City, Utah.

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Total Synthesis of Bryostatin 1

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  1. Total Synthesis of Bryostatin 1 Brittany Wheeler Chemistry Department University of Maryland J. Am. Chem. Soc. Keck, G. E.; Poudel, Y. B.; Cummins, T. J.; Rudra, A.; Covel, J.A. 2011,133, 744-747.

  2. Gary E. Keck • Professor at the University of Utah, Salt Lake City, Utah. • Group interests focus on total synthesis of natural products that have biological interest such as anti-tumor activity. • Another interest is developing new synthetic methods to be used in synthesis of natural products.

  3. Bryostatin 1

  4. History • Bryostatins were first isolated in the 1960’s by George Pettit from Bugulaneritina, a species of bryozoa (filter-feeding aquatic invertebrates). • 20 different kinds of bryostatins isolated • Strong protein kinase C regulators • Exhibit anti-cancer and anti-Alzheimer’s qualities • One gram of bryostatin can be extracted from one ton of Bugulaneritina synthesis is a research priority

  5. Esterification

  6. Selective oxidation of terminal alkene to an alcohol

  7. Oxidation followed by Witting reaction

  8. Rainier Metathesis

  9. Oxidative functionalization

  10. Selective reduction, acylation

  11. Deprotection and oxidation

  12. Formation of third ring

  13. Oxidative coupling,

  14. Asymmetric Horner-Wadsworth-Emmons Reaction

  15. Methanolysis and esterification

  16. Bryostatin 1 (yield 1.44%)

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