Abstract Reaction of rotenone (1a) and amorphigenin (2a) with hydroxylamine in alkaline medium affords a mixture of the isoximes 5 and 6, and the new 6a-NH 2 spiro derivatives 12a, b and 13a, b. The structures, stereochemistry, and the mechanisms of formation of these products are discussed.
![(2R,3'R,7R)-3'-amino-6',7'-dimethoxy-7-(prop-1-en-2-yl)-7,8-dihydro-3H-spiro[benzo[1,2-b:3,4-b']difuran-2,4'-chroman]-3-one结构式](https://image.chemsrc.com/caspic/077/111160-90-8.png)
