抄録
The acid melting at 143°C, which was separated from the oxidation product of (±) chrysanthemic acid (I) with potassium permanganate and had been believed to be an isomer of dihydroxy-dihydrochrysanthemic acid, was confirmed to be (±)-2, 2-dimethyl-3 (1'-oxo-2'-hydroxy-2'-methyl) propyl-1, 3-trans-cyclopropane-1-carboxylic acid (II). Optically active acid was obtained from (±)-trans-chrysanthemic acid, and the several chemical behaviours of these acids were described.