7α-Hydroxy-8β,9β-H- cis- bicyclo[4,3,0]non-4-ene-4-aldehyde, a nonane compound with novel skeleton, named tsaokoin, was isolated from the fruits of Amomum tsao-ko. Its structure was established on the basis of spec...7α-Hydroxy-8β,9β-H- cis- bicyclo[4,3,0]non-4-ene-4-aldehyde, a nonane compound with novel skeleton, named tsaokoin, was isolated from the fruits of Amomum tsao-ko. Its structure was established on the basis of spectral analysis.展开更多
A new method of enantioselective synthesis of （S,S）-2,8-diazobicyclo [4.3.0] nonane was found by using （R）-2-amino-2- phenyl-ethanol as chiral induction reagent. The entire synthetic process included 8 steps which...A new method of enantioselective synthesis of （S,S）-2,8-diazobicyclo [4.3.0] nonane was found by using （R）-2-amino-2- phenyl-ethanol as chiral induction reagent. The entire synthetic process included 8 steps which were easy to operate with high yield. The purification method was only simple recrystallization or even used directly in the next step without further purifica- tion. The total yield was 29%.展开更多
文摘7α-Hydroxy-8β,9β-H- cis- bicyclo[4,3,0]non-4-ene-4-aldehyde, a nonane compound with novel skeleton, named tsaokoin, was isolated from the fruits of Amomum tsao-ko. Its structure was established on the basis of spectral analysis.
文摘A new method of enantioselective synthesis of （S,S）-2,8-diazobicyclo [4.3.0] nonane was found by using （R）-2-amino-2- phenyl-ethanol as chiral induction reagent. The entire synthetic process included 8 steps which were easy to operate with high yield. The purification method was only simple recrystallization or even used directly in the next step without further purifica- tion. The total yield was 29%.
