In this paper, it is shown that pterodonoic acid may or may not have the structure of 3-oxoeudesma-4,11-dien-12-oic acid 1 by comparison of their spectral data. But it is certainly not 10-epi-3-oxoeudesma-4,11-dien-12...In this paper, it is shown that pterodonoic acid may or may not have the structure of 3-oxoeudesma-4,11-dien-12-oic acid 1 by comparison of their spectral data. But it is certainly not 10-epi-3-oxoeudesma-4,11-dien-12-oic, acid 2, which is synthesized from dihydrocarvone 3.展开更多
A ten-step synthesis of 7-deoxy-1,2,10,20-tetrahydrataxamairin B(5). a key precursor for taxamairin A(1), B(2), has been achieved. A Friedel-Crafts annunation is the key step.
文摘In this paper, it is shown that pterodonoic acid may or may not have the structure of 3-oxoeudesma-4,11-dien-12-oic acid 1 by comparison of their spectral data. But it is certainly not 10-epi-3-oxoeudesma-4,11-dien-12-oic, acid 2, which is synthesized from dihydrocarvone 3.
文摘A ten-step synthesis of 7-deoxy-1,2,10,20-tetrahydrataxamairin B(5). a key precursor for taxamairin A(1), B(2), has been achieved. A Friedel-Crafts annunation is the key step.
