Potassium Hydroxide → HCID 15674626, compound

Participants

Reaction Steps

The 2,5,6,7-tetramethyl-1-indenone was prepared by reducing 2,4,5,6-tetramethyl-1,3-indanione with zinc dust at 50° C. Product was purified by chromatography with 1% ethyl acetate in benzene to yield two isomers. The major isomer was treated with 10% potassium hydroxide, then purified by sublimation. The compound has the structure: ##STR8## Dehydropterosin O synthesis: 3-acetoxy-6(beta-methoxy) ethyl-2,5,7-trimethyl-1-indanone was dissolved in tetrahydrofuran and 10% potassium hydroxide and refluxed for two hours. The solution was then extracted three times with ether and the combined extracts chromatographed with 2% ethylacetate in benzene to yield the Dehydropterosin O compound. The compound has the structure: ##STR9## R=H Dehydropterosin B R=CH3Dehydropterosin O

Provenance & Evidence