Studies on the Active Principles of Leucothoe grayana MAX

Part X. The Struture of Grayanotoxin-II. Part 3

抄録

By the ozonolysis of the mixture of unsaturated γ-lactonic acids (II and III), formaldehyde and a γ-lactonic acid (IV) having a five membered rink ketone were obtained from III, and an oily acidic product (V) from II. The acid (V) could be converted to 5-acetyl-2-carboxyphenylacetic acid (VIII), which could also be synthesized from 5-acctylindane (IX).