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Total synthesis of proposed cephalosporolides H and I.
- Source :
-
Tetrahedron . Jun2015, Vol. 71 Issue 23, p3885-3889. 5p. - Publication Year :
- 2015
-
Abstract
- An efficient total synthesis toward spiroketal diastereomers of cephalosporolides H and I was achieved, respectively, taking advantage of intramolecular Wacker-type spiroketalization on the common olefin-containing dihydroxy-γ-lactone substrate. By comparing the physical data of natural products with synthetic samples, we suggest that the reported stereochemical assignments for cephalosporolides H and I are incorrect. Our work suggests that the stereochemistry on C-6 of the core spiroketal skeleton should be revised to S from its original R assignment, and the real structures of these natural compounds should be reconsidered. [ABSTRACT FROM AUTHOR]
- Subjects :
- *SPIROKETALS
*DIASTEREOISOMERS
*METATHESIS reactions
*OXIDATION
*STEREOCHEMISTRY
Subjects
Details
- Language :
- English
- ISSN :
- 00404020
- Volume :
- 71
- Issue :
- 23
- Database :
- Academic Search Index
- Journal :
- Tetrahedron
- Publication Type :
- Academic Journal
- Accession number :
- 102785128
- Full Text :
- https://doi.org/10.1016/j.tet.2015.04.025