| 摘要 |
<p>Spiro-pyrrolizidone-oxindoles. Novel cpds. of formula (I) (where R1 = H, lower alkyl, aryl, MeO or NO2; R2 = H or lower alkyl; R3 = lower alkyl or aralkyl) are intermediates for pharmaceutical spiro-indolines, (I) may be prepd. by treating the corresp. 1-pyrrolidino-3-oxo-5,6,11-11b-tetrahydro-3H-indolo 3,2-g -indolizidine derivs. with an alkali metal alcoholate derived from R3OH, in the presence of O2.</p> |
