PRACTICAL PREPARATION OF BICYCLO[3.2.0]HEPT-3-EN-6-ONES AND IT UTILIZATION IN STEREOSELECTIVE TOTAL SYNTHESIS OF GRANDISOL AND LINEATIN VIA A VERSATILE INTERMEDIATE
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CONFALONIERI, G
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机构:UNIV BOLOGNA,DIPARTIMENTO CHIM ORGAN A MANGINI,I-40136 BOLOGNA,ITALY
CONFALONIERI, G
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MAROTTA, E
RAMA, F
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机构:UNIV BOLOGNA,DIPARTIMENTO CHIM ORGAN A MANGINI,I-40136 BOLOGNA,ITALY
RAMA, F
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RIGHI, P
ROSINI, G
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机构:UNIV BOLOGNA,DIPARTIMENTO CHIM ORGAN A MANGINI,I-40136 BOLOGNA,ITALY
ROSINI, G
SERRA, R
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机构:UNIV BOLOGNA,DIPARTIMENTO CHIM ORGAN A MANGINI,I-40136 BOLOGNA,ITALY
SERRA, R
VENTURELLI, F
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机构:UNIV BOLOGNA,DIPARTIMENTO CHIM ORGAN A MANGINI,I-40136 BOLOGNA,ITALY
VENTURELLI, F
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[1] UNIV BOLOGNA,DIPARTIMENTO CHIM ORGAN A MANGINI,I-40136 BOLOGNA,ITALY
New and efficient stereoselective total syntheses have been devised for racemic grandisol and lineatin, two important components of pheromonic blends. They are based on the utilisation of 1,4-dimethylbicyclo[3.2.0]hept-3-en-6-one as a pivotal intermediate. This compound, as well as other bicyclo[3.2.0]hept-3-en-6-ones, are now easily available by a practical bicyclization of the corresponding 3-hydroxy-6-alkenoic acids.