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Title: Synthesis of 25-oxygenated D: A-friedooleananes: Part V — Conversion of putranjivadione (D: A-friedoolean-3, 7-dione) to 25-formyl D: A-friedoolean-3-one
Authors: Ghosh, S K
Dutta, S K
Roy, M
Majumdar, Kakoli
Das, Saktipada
Issue Date: Sep-2002
Publisher: NISCAIR-CSIR, India
Abstract: Structure of the natural product 25-formyl-D:A-friedoolean-3-one 1 has been established by its synthesis from putranjivadione 2. Compound 2 is converted into 7β, 25-oxido-D:A-friedoolean- 3β-ol 4 which on treatment with lithium in ethylenediamine yields D:A-friedoolean-3β, 25-diol 5 as one of the products.5 on oxideation with CrO3 in pyridine affords 1.
Page(s): 1960-1961
ISSN: 0975-0983(Online); 0376-4699(Print)
Appears in Collections:IJC-B Vol.41B(09) [September 2002]

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