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 language | English (US) |
|---|---|
| Pages (from-to) | 1425-1428 |
| Number of pages | 4 |
| Journal | Tetrahedron Letters |
| Volume | 22 |
| Issue number | 15 |
| DOIs | |
| State | Published - 1981 |
| Externally published | Yes |
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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 journal › Article
}
TY - JOUR
T1 - Structures of kokzeylanol and kokzeylanonol two new natural tri- and tetra- oxygenated D
T2 - A-friedo-oleananes
AU - Gunatilaka, Leslie
AU - Nanayakkara, N. P Dhammika
AU - Uvais, M.
AU - Sultanbawa, S.
PY - 1981
Y1 - 1981
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=49149132739&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=49149132739&partnerID=8YFLogxK
U2 - 10.1016/S0040-4039(01)90339-9
DO - 10.1016/S0040-4039(01)90339-9
M3 - Article
VL - 22
SP - 1425
EP - 1428
JO - Tetrahedron Letters
JF - Tetrahedron Letters
SN - 0040-4039
IS - 15
ER -