4.8 Article

Enantioselective Synthesis of the Predominant AB Ring System of the Schisandra Nortriterpenoid Natural Products

Journal

ORGANIC LETTERS
Volume 16, Issue 17, Pages 4480-4483

Publisher

AMER CHEMICAL SOC
DOI: 10.1021/ol502027m

Keywords

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Funding

  1. EPSRC for an Advanced Research Fellowship [EP/E055273/1]
  2. A*STAR for a National Science Scholarship
  3. German Academic Exchange Service (DAAD)
  4. Engineering and Physical Sciences Research Council [EP/E055273/1] Funding Source: researchfish
  5. EPSRC [EP/E055273/1] Funding Source: UKRI

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An enantioselective synthesis of the AB ring system common to the majority of the Schisandra nortriterpenoid natural products is reported. Key steps include a stereospecific ring opening of a trisubstituted epoxide and the use of a beta-lactone to enable installation of the gem-dimethyl functionality of the B ring. An acetalization strategy played a key role in a late-stage biomimetic AB ring bicyclization.

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