JPS55136242A - Sesquiterpene derivative and its preparation - Google Patents
Sesquiterpene derivative and its preparationInfo
- Publication number
- JPS55136242A JPS55136242A JP4231079A JP4231079A JPS55136242A JP S55136242 A JPS55136242 A JP S55136242A JP 4231079 A JP4231079 A JP 4231079A JP 4231079 A JP4231079 A JP 4231079A JP S55136242 A JPS55136242 A JP S55136242A
- Authority
- JP
- Japan
- Prior art keywords
- formula
- ketone
- sesquiterpene derivative
- acid
- preparation
- 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
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- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
NEW MATERIAL:A sesquiterpene derivative of formula I (R1 and R2 are H or lower alkyloxy groups).
EXAMPLE: The compound of formula II.
USE: An intermediate for the synthesis of warburganal, an antifeedant against armyworm.
PROCESS: 7-Oxoisodrimenin of formula III is treated with a dihydric alcohol, e.g. ethylene glycolor 1,3-propanediol, and an organic acid, e.g. p-toluenesulfonic acid or camphorsulfonic acid, under refluxing, to form a ketal of formula IV, which is reduced with a reducing agent, e.g. lithium aluminum hydride, in an organic solvent to give a ketone of formula II wherein R1 and R2 are H in formula I. The ketone is then reacted with an acetylating agent, e.g. acetic anhydride-pyridine, in a solvent to afford a diacetate of formula V.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4231079A JPS5826896B2 (en) | 1979-04-06 | 1979-04-06 | Sesquiterpene derivatives and their production method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4231079A JPS5826896B2 (en) | 1979-04-06 | 1979-04-06 | Sesquiterpene derivatives and their production method |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS55136242A true JPS55136242A (en) | 1980-10-23 |
JPS5826896B2 JPS5826896B2 (en) | 1983-06-06 |
Family
ID=12632442
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP4231079A Expired JPS5826896B2 (en) | 1979-04-06 | 1979-04-06 | Sesquiterpene derivatives and their production method |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5826896B2 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0324071Y2 (en) * | 1986-06-02 | 1991-05-24 |
-
1979
- 1979-04-06 JP JP4231079A patent/JPS5826896B2/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS5826896B2 (en) | 1983-06-06 |
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