JPS55136272A - Sesquiterpene derivative and its preparation - Google Patents
Sesquiterpene derivative and its preparationInfo
- Publication number
- JPS55136272A JPS55136272A JP4231179A JP4231179A JPS55136272A JP S55136272 A JPS55136272 A JP S55136272A JP 4231179 A JP4231179 A JP 4231179A JP 4231179 A JP4231179 A JP 4231179A JP S55136272 A JPS55136272 A JP S55136272A
- Authority
- JP
- Japan
- Prior art keywords
- formula
- preparation
- warburganal
- ketone
- reacted
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Abstract
NEW MATERIAL:A sesquiterpene derivative of formula I.
USE: An intermediate for Warburganal (Warburganal, an effective antifeedant against armyworm).
PREPARATION: An 7-oxoisodrimenin of formula II is treated and refluxed with a dihydric alcohol, e.g. ethylene glycol, and an organic acid, e.g. p-toluenesulfonic acid, to give a ketal of formula III. The resulting ketal is reacted with a reducing reagent, e.g. lithium aluminum hydride, in an organic solvent, to obtain a ketone of formula IV, and further this ketone is reacted with an acetylating agnet, e.g. acetic anhydride-pyridine, in a solvent, to produce a diacetate of formula V, which is finally treated with a peroxide, e.g. H2O2, in the presence of an aqueous alkali, to produce the epoxide of formula I.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4231179A JPS5910668B2 (en) | 1979-04-06 | 1979-04-06 | Sesquiterpene derivatives and their production method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4231179A JPS5910668B2 (en) | 1979-04-06 | 1979-04-06 | Sesquiterpene derivatives and their production method |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS55136272A true JPS55136272A (en) | 1980-10-23 |
JPS5910668B2 JPS5910668B2 (en) | 1984-03-10 |
Family
ID=12632469
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP4231179A Expired JPS5910668B2 (en) | 1979-04-06 | 1979-04-06 | Sesquiterpene derivatives and their production method |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5910668B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5308867A (en) * | 1988-11-28 | 1994-05-03 | Sankyo Company, Limited | Platelet activating factor antagonists, named "the phomactins", their preparation and use |
-
1979
- 1979-04-06 JP JP4231179A patent/JPS5910668B2/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5308867A (en) * | 1988-11-28 | 1994-05-03 | Sankyo Company, Limited | Platelet activating factor antagonists, named "the phomactins", their preparation and use |
Also Published As
Publication number | Publication date |
---|---|
JPS5910668B2 (en) | 1984-03-10 |
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