4.4 Article

Synthetic study of solanoeclepin A: Cyclobutane cyclization via SmI2-additive-mediated reaction and D ring functionalization

Journal

TETRAHEDRON
Volume 73, Issue 18, Pages 2705-2714

Publisher

PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tet.2017.03.065

Keywords

Solanoeclepin A; SmI2-mediated radical ketyl cyclization; Cyclobutane formation; Tricyclo[5.2.1.0(1.6)]decene

Funding

  1. National Science Council
  2. National Tsing Hua University, Taiwan

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The construction of tricyclo[5.2.1.0(1.6)]decene skeleton was achieved by cyclobutane ring formation via improved radical reaction using SmI2-H2O-HFIP and SmI2-LiCl conditions in good yields. Those additives were studied to increase the reactivity of SmI2. Two interesting reactions via neighboring group participations are described for introducing the C4 oxygen functionality by the assistance of C6 substituent in a regioselective manner. (C) 2017 Elsevier Ltd. All rights reserved.

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