Started from 5-hydroxy-2-pentanone, (R)(E)-3,7-dimethyl-2-octene-1,8-dioic acid, callosobruchusic acid, was synthesized via five steps with D-(-)-camphor sultam as the chiral auxiliary. It was of good optical purity a...Started from 5-hydroxy-2-pentanone, (R)(E)-3,7-dimethyl-2-octene-1,8-dioic acid, callosobruchusic acid, was synthesized via five steps with D-(-)-camphor sultam as the chiral auxiliary. It was of good optical purity and yield.展开更多
R,4S ) 4 Methyl 3 hexanol and ( 3R,4S ) 4 methyl 3 heptanol, which are the pheromones of ant Tetramorium impurm and Leptogenys diminuta , were stereoselectively synthesized by six step sequence starting from N bornane...R,4S ) 4 Methyl 3 hexanol and ( 3R,4S ) 4 methyl 3 heptanol, which are the pheromones of ant Tetramorium impurm and Leptogenys diminuta , were stereoselectively synthesized by six step sequence starting from N bornane 10,2 sultam separately, the two asymmetric carbon atoms of the target products were created by employing asymmetric syn aldolization of N acylbornane 10,2 sultam with propylaldehyde. The enantiomeric excess of the target products prepared by this route is over 92%.展开更多
基金Supported by the National Natural Science Foundation of China( No. 2 9872 0 12)
文摘Started from 5-hydroxy-2-pentanone, (R)(E)-3,7-dimethyl-2-octene-1,8-dioic acid, callosobruchusic acid, was synthesized via five steps with D-(-)-camphor sultam as the chiral auxiliary. It was of good optical purity and yield.
文摘R,4S ) 4 Methyl 3 hexanol and ( 3R,4S ) 4 methyl 3 heptanol, which are the pheromones of ant Tetramorium impurm and Leptogenys diminuta , were stereoselectively synthesized by six step sequence starting from N bornane 10,2 sultam separately, the two asymmetric carbon atoms of the target products were created by employing asymmetric syn aldolization of N acylbornane 10,2 sultam with propylaldehyde. The enantiomeric excess of the target products prepared by this route is over 92%.
