Structures of kokzeylanol and kokzeylanonol two new natural tri- and tetra- oxygenated D

A-friedo-oleananes

Leslie Gunatilaka, N. P Dhammika Nanayakkara, M. Uvais, S. Sultanbawa

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

Kokzeylanol and kokzeylanonol obtained from Kokoona zeylanica have been shown to be 6β,27-dihydroxy-D:A-friedo-olean-3-one (1) and 6β,27-dihydroxy-D:A-friedo-oleana-3,21-dione (2), respectively by the deoxygenatlon of their 27-acetoxy derivatives using Lithium-ethylene diamine reduction coupled with spectroscopic and irradiation methods. Kokzeylanonol represents the first tetraoxygenated D:A-friedo-oleanane isolated from a natural source.

Original languageEnglish (US)
Pages (from-to)1425-1428
Number of pages4
JournalTetrahedron Letters
Volume22
Issue number15
DOIs
StatePublished - 1981
Externally publishedYes

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Celastraceae
Diamines
Lithium
Irradiation
Derivatives
ethylene
oleanane

ASJC Scopus subject areas

  • Biochemistry
  • Organic Chemistry
  • Drug Discovery

Cite this

Structures of kokzeylanol and kokzeylanonol two new natural tri- and tetra- oxygenated D : A-friedo-oleananes. / Gunatilaka, Leslie; Nanayakkara, N. P Dhammika; Uvais, M.; Sultanbawa, S.

In: Tetrahedron Letters, Vol. 22, No. 15, 1981, p. 1425-1428.

Research output: Contribution to journalArticle

Gunatilaka, Leslie ; Nanayakkara, N. P Dhammika ; Uvais, M. ; Sultanbawa, S. / Structures of kokzeylanol and kokzeylanonol two new natural tri- and tetra- oxygenated D : A-friedo-oleananes. In: Tetrahedron Letters. 1981 ; Vol. 22, No. 15. pp. 1425-1428.
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