[ Objective] The paper was to explore the deratization and anti fertility effect of triptolide on farmland rats in Sanya City. [ Method] Autumn and spring control tests were carried out in Potianyang and Miaolinyang, ...[ Objective] The paper was to explore the deratization and anti fertility effect of triptolide on farmland rats in Sanya City. [ Method] Autumn and spring control tests were carried out in Potianyang and Miaolinyang, respectively. [ Result] The rat density in autumn control area decreased from 28.57% （ out break） to 2.86%, 3.81% and 6.80% at 11,41 and 70 d after triptolide treatment, respectively. The rat density in spring control area was lower at 19 and 47 d post treatment, and the correction deratization effect was 99.48% -99.88%. The testicular descent rate and pregnancy rate decreased significantly after treatment of triptolide. [Conclusion] Triptolide was safe in application, and is hence recommended for large scale extension in the farmland in Sanya City.展开更多
Anthracene-based cylindrical macrotricyclic polyether (1) containing two dibenzo-30-crown-10 cavities has been proved to be an efficient host for the templated complexation with N,N'-dipropyl-1,4,5,8-naphthalenete...Anthracene-based cylindrical macrotricyclic polyether (1) containing two dibenzo-30-crown-10 cavities has been proved to be an efficient host for the templated complexation with N,N'-dipropyl-1,4,5,8-naphthalenetetracarboxylic diimide in the presence of lithium ions in both solution and solid state. Host 1 could also form 1:1 complex with the bispyridinium salt with two β-hydroxyethyl groups in solution and in the solid state. Moreover, it was also found that the switchable complexation processes between the macrotricyclic host and two different kinds of guests could be chemically controlled by the addition and removal of lithium ions.展开更多
A series of novel N,O-type chiral ligands derived from enantiopure inherently chiral calix[4]arenes containing quinolin-2-yl-methanol moiety in the cone or partialcone conformation have been synthe-sized and character...A series of novel N,O-type chiral ligands derived from enantiopure inherently chiral calix[4]arenes containing quinolin-2-yl-methanol moiety in the cone or partialcone conformation have been synthe-sized and characterized. Moreover,they have been applied to the catalytic asymmetric addition of diethylzinc to benzaldehyde,which represents the first example that the inherently chiral calixarene can be used as the chiral ligands for the catalytic asymmetric synthesis.展开更多
文摘[ Objective] The paper was to explore the deratization and anti fertility effect of triptolide on farmland rats in Sanya City. [ Method] Autumn and spring control tests were carried out in Potianyang and Miaolinyang, respectively. [ Result] The rat density in autumn control area decreased from 28.57% （ out break） to 2.86%, 3.81% and 6.80% at 11,41 and 70 d after triptolide treatment, respectively. The rat density in spring control area was lower at 19 and 47 d post treatment, and the correction deratization effect was 99.48% -99.88%. The testicular descent rate and pregnancy rate decreased significantly after treatment of triptolide. [Conclusion] Triptolide was safe in application, and is hence recommended for large scale extension in the farmland in Sanya City.
基金supported by the National Natural Science Foundation of China (91127009, 20972162)the National Basic Research Program of China (2011CB932501)
文摘Anthracene-based cylindrical macrotricyclic polyether (1) containing two dibenzo-30-crown-10 cavities has been proved to be an efficient host for the templated complexation with N,N'-dipropyl-1,4,5,8-naphthalenetetracarboxylic diimide in the presence of lithium ions in both solution and solid state. Host 1 could also form 1:1 complex with the bispyridinium salt with two β-hydroxyethyl groups in solution and in the solid state. Moreover, it was also found that the switchable complexation processes between the macrotricyclic host and two different kinds of guests could be chemically controlled by the addition and removal of lithium ions.
基金Supported by the National Natural Science Foundation of China (Grant Nos. 20625206 & 20372064)the National Basic Research Project (Grant Nos. 2007CB808000 & 2008CB617501), and the Chinese Academy of Sciences
文摘A series of novel N,O-type chiral ligands derived from enantiopure inherently chiral calix[4]arenes containing quinolin-2-yl-methanol moiety in the cone or partialcone conformation have been synthe-sized and characterized. Moreover,they have been applied to the catalytic asymmetric addition of diethylzinc to benzaldehyde,which represents the first example that the inherently chiral calixarene can be used as the chiral ligands for the catalytic asymmetric synthesis.
