Crystal Structure of Taxinine A

ＣｒｙｓｔａｌＳｔｒｕｃｔｕｒｅｏｆＴａｘｉｎｉｎｅＡＷＵＮａｎ；ＬＵＹａｎｇ；ＺＨＥＮＧＱｉ－Ｔａｉ；ＦＡＮＧＷｅｉ－Ｓｈｕｏ；ＴＯＮＧＸｉａｏ－Ｊｉｅ；ＦＡＮＧＱｉ－Ｃｈｅｎｇ（ＩｎｓｔｉｔｕｔｅｏｆＭａｔｅｒｉａＭｅｄｉｃａ，ＣｈｉｎｅｓｅＡｃ...     

Template Synthesis and Structure of Dinuclear Zinc Complex with Three Kinds of Pyrazole Ligands

ＴｅｍｐｌａｔｅＳｙｎｔｈｅｓｉｓａｎｄＳｔｒｕｃｔｕｒｅｏｆＤｉｎｕｃｌｅａｒＺｉｎｃＣｏｍｐｌｅｘｗｉｔｈＴｈｒｅｅＫｉｎｄｓｏｆＰｙｒａｚｏｌｅＬｉｇａｎｄｓＺＨＡＮＧＷｅｎ－Ｘｉｎｇ；ＭＡＣｈａｎｇ－Ｑｉｎ；ＷＡＮＧＸｕ－Ｎｉｎｇ；ＹＵＺｈｅ...     

Amperometric Glucose Sensor with Tetrathiafulvalene as an Electron Transfer Mediator

ＡｍｐｅｒｏｍｅｔｒｉｃＧｌｕｃｏｓｅＳｅｎｓｏｒｗｉｔｈＴｅｔｒａｔｈｉａｆｕｌｖａｌｅｎｅａｓａｎＥｌｅｃｔｒｏｎＴｒａｎｓｆｅｒＭｅｄｉａｔｏｒＳＵＮＣｈａｎｇ－ｑｉｎｇ，ＹＡＮＧＸｕ，ＬＵＡＮＣｈａｉ－ｘｉａ，ＧＡＯＱｉａｎａｎｄＸＵＨｏｎｇ...     

Studies on the Stability of Four－membered Ring Chelates（Ⅳ）──Sulphur Coordinated Xanthate Complexes

ＳｔｕｄｉｅｓｏｎｔｈｅＳｔａｂｉｌｉｔｙｏｆＦｏｕｒ－ｍｅｍｂｅｒｅｄＲｉｎｇＣｈｅｌａｔｅｓ（Ⅳ）──ＳｕｌｐｈｕｒＣｏｏｒｄｉｎａｔｅｄＸａｎｔｈａｔｅＣｏｍｐｌｅｘｅｓＺＵＯＢｅｎ－ｃｈｅｎｇ；ＹＡＮＧＹｕｅ－ｈｕｉ；ＺＨＡＮＧＸｉａｏ－ｌｉ...     

Studies on Ester Exchange Reaction

ＳｔｕｄｉｅｓｏｎＥｓｔｅｒＥｘｃｈａｎｇｅＲｅａｃｔｉｏｎＺＨＡＮＧＪｉｎｇ－ｗｅｎ,ＺＨＡＮＧＸｉａｏ－ｌｏｎｇ,ＭＡＸｉｕ－ｌｉ,ＬＩＵＣｈａｎｇ－ｃｈｅｎｇ,ＭＵＹｉｎｇ,ＳＵＮＹｕｎ－ｘｉｕ,ＪＩＡＮＧＷｅｎ－ｐｕ,ＨＵＡＮＧＨｕａ－ｍｉｎ...     

Synthesis and Biological Evaluation of Substituted 3＇－N－Benzoyl Taxol Analogs

ＳｙｎｔｈｅｓｉｓａｎｄＢｉｏｌｏｇｉｃａｌＥｖａｌｕａｔｉｏｎｏｆＳｕｂｓｔｉｔｕｔｅｄ３＇－Ｎ－ＢｅｎｚｏｙｌＴａｘｏｌＡｎａｌｏｇｓＱｉｎＹＵＥ；Ｑｉ－ＣｈｅｎｇＦＡＮＧａｎｄＸｉａｏＴｉａｎＵＡＮＧ（ＩｎｓｉｔｉｔｕｔｅｏｆＭａｔｅｒｉａＭｅ...     

Homologation of Taxol Side Chain via Arndt－Eistert Reaction Involving the Wolff Rearrangement

ＨｏｍｏｌｏｇａｔｉｏｎｏｆＴａｘｏｌＳｉｄｅＣｈａｉｎｖｉａＡｒｎｄｔ－ＥｉｓｔｅｒｔＲｅａｃｔｉｏｎＩｎｖｏｌｖｉｎｇｔｈｅＷｏｌｆｆＲｅａｒｒａｎｇｅｍｅｎｔ￥ＧｕａｎｇＹａｎＨＵＡＮＧ；ＹｕＧＵＯ；ＸｉａｏＴｉａｎＬＩＡＮＧ（Ｉｎｓｔｉｔｕｔ...     

STRUCTURE OF 1-EPICRASSICAUDINE

ＳＴＲＵＣＴＵＲＥＯＦ１－ＥＰＩＣＲＡＳＳＩＣＡＵＤＩＮＥ￥ＦｅｎｇＰｅｎｇＷＡＮＧ；ＸｕｅＰｉｎｇＤＡＩ；ＪｉａｎＺｈｏｎｇＷＡＮＧａｎｄＲｏｎｇＺＨＡＮＧ（ＤｅｐａｒｔｍｅｎｔｏｆＣｈｅｍｉｓｔｒｙｏｆＭｅｄｉｃｉｎａｌＮａｔｕｒａｌＰｒｏｄｕｃ...     

An AM1 Study on the Mechanism of Uridine Phospborolysis

ＡｎＡＭ１ＳｔｕｄｙｏｎｔｈｅＭｅｃｈａｎｉｓｍｏｆＵｒｉｄｉｎｅＰｈｏｓｐｂｏｒｏｌｙｓｉｓＳｈａｎＲｏｎｇＺＨＡＯ；ＱｉｎＭｉＷＡＮＧ；ＫａｉＸｉａｎＣＨＥＮ；Ｓｕｏ－ＢａｏＲＯＮＧ，Ｒｕ－ＹｕｎＪＩ（ＳｈａｎｇｈａｉＩｎｓｔｉｔｕｔｅｏｆＭａｔ...     

DIOXANE-WATER MIXTURE SEPARATION BY PERVAPORATION

ＤＩＯＸＡＮＥ－ＷＡＴＥＲＭＩＸＴＵＲＥＳＥＰＡＲＡＴＩＯＮＢＹＰＥＲＶＡＰＯＲＡＴＩＯＮ￥ＧｕｉＢａｏＺＨＡＮＧ；ＫｅＤａＺＨＡＮＧ；ＪｉＰｉｎｇＸＵ（ＣｈａｎｇｃｈｕｎＩｎｓｔｉｔｕｔｅｏｆＡｐｐｌｉｅｄＣｈｅｍｉｓｔｒｙ，ＡｃａｄｅｍｉａＳｉｎ...     

Synthesis and Complexation Behavior Studies of Novel Bis-crown Ethers

The novel unique structures of bis-crown ethers were successfully synthesized from tri (propylene glycol) di-acrylate with amino- and aza-crown ethers through Michael addition. The crown ethers contained the primary and the secondary amine group such as 2-aminomethyl crown ethers, 4-aminobenzo crown ethers and 1-aza crown ethers. The newly synthesized bis-crown ethers were characterized by elemental analyses, IR, ¹H NMR, ¹³C NMR, mass spectrum, respectively. The newly synthesized host compounds of bis-crown ethers showed complex ability with various sizes of alkali metal cations such as Na⁺, K⁺, Rb⁺ and Cs⁺. The complexation behavior was examined by ¹H NMR spectroscopy and UV spectrometry.     

杂元素冠醚研究(Ⅻ)──氧、硫、硒和碲杂冠醚的液膜迁移性能比较

报道了碲杂冠醚(TeB15C5)对Na⁺、K⁺、Ag⁺和Pb²⁺的液膜迁移能力,并与相应的全氧冠醚(B15C5)、硫杂冠醚(SB15C5)和硒杂冠醚(SeB15C5)作了比较;同时以SeB15C5对K⁺的迁移为例考察了冠醚浓度和盐浓度对迁移速率的影响,结果表明,TeB15C5对Na⁺、K⁺和Pb²⁺的迁移能力比SB15C5和SeB15C5强,但对Ag⁺的迁移速率比后两者慢;SeB15C5对Ag⁺的迁移速度比SB15C5快,两者对Ag⁺的选择性都相当高,可以用来分离和回收银等贵重金属。     

硫杂冠醚的合成

冠醚化合物对金属离子的络合不仅具有较高的稳定性,而且更重要的是具有良好的选择性。当冠醚环中的氧原子部分或全部被氮或硫原子取代后,它们对碱金属、碱土金属的亲和性能降低,而对过渡金属离子的亲和能力相应提高。硫杂冠醚对亲硫的贵金属、重金属离子具有更强的络合能力和更高的选择性。1974     

Synthesis and characterization of novel ionophores of double-armed penta-crown ethers

Unique structures of novel ionophores of double-armed penta-crown ethers were successfully synthesized. Diaza 18-crown-6 was designed as the parent crown ring. The penta-crown ethers were prepared by the reaction of trimethylolpropane triacrylate (TMPTA) with diaza 18-crown-6 and further with 1-aza crown ethers through the Michael reaction. The newly synthesized penta-crown ethers were characterized by ¹H NMR, ¹³C NMR, FAB mass spectrum, IR and elemental analyses, respectively.     

N-(2-苦胺基乙基)单氮杂冠醚的合成

研究并比较了氮支套索型生色冠醚1a和1b两条不同的合成路线, 结果表明, 由N-苦基乙二胺(2)与1,11-二碘-3,6,9-三氧杂十一烷进行N-烷基化环化反应, 可方便地制备N-(2-苦胺基乙基)单氮杂-12-冠-4(1a), 但按此法未能获得更大环的-15-冠-5(1b);若从N-对甲苯磺酰基乙二胺(6)或N-(2-对甲苯磺酰胺基乙基)二乙醇胺(7)出发, 经环化, 脱除对甲苯磺酰基而制得的N-(2-氨基乙基)单氮杂冠醚5a和5b分别与苦基氯反应, 则可获得高产率的生色生色冠醚11a和1b.     

聚醚砜醚酮的合成与性能

以4,4′-二羟基二苯砜和4,4′-二氟二苯酮为单体, 通过溶液缩聚合成了聚醚砜醚酮(PESEK), 其分子结构相当于聚醚砜(PES)与聚醚醚酮(PEEK)的交替共聚物. 在共聚物分子中, 存在砜基、醚基和酮基, 整个结构单元形成了大共轭体系, 聚合物属无定形聚合物, 玻璃化转变温度(Tg)为198 ℃, 介于PEEK和PES的Tg之间, 其热稳定性和加工性能优于PES, 而力学性能与PES接近.     

Three New Bisabolocurcumin Ethers from the Rhizomes of Curcuma longa L.

Three new bisabolocurcumin ethers, named demethoxybisabolocurcumin ether ( 1 ), bisabolocurcumin ether ( 2 ), and didemethoxybisabolocurcumin ether ( 3 ), along with two known compounds, 4 and 5 , were isolated from the AcOEt extract of the rhizomes of Curcuma longa L. Their structures were established by the analysis of NMR and MS data. The new compounds 1 – 3 , which possess a new 1,7‐diarylheptanoid skeleton linked with a bisabolone‐type sesquiterpene substructure by a C? O bond, were found for the first time in a natural source.     

The synthesis of unique structures of tetra-crown ethers through Michael addition

Unique structures of tetra-crown ethers were successfully synthesized by the reaction of tetramethylolmethane tetraacrylate (TMMT) reacted with crown ethers containing primary amine functional group such as 2-aminomethyl crown ethers and 4-aminobenzo crown ethers; containing secondary amine group like 1-aza crown ethers through Michael reaction. The newly synthesized tetra-crown ethers were characterized by ¹H NMR, ¹³C NMR, FAB mass spectrum, elemental analyses, IR, respectively.     

Pyrimidino- and Proton-ionizable Pyrimidono-crown Ether Ligands: Synthesis and Preliminary Complexation Studies

Pyrimidino-crown ethers were prepared in 30-50% yields by reactingthe ditosylate derivative of the appropriate oligoethylene glycol with4-methoxy-5-methyl-2,6-pyrimidinedimethanol under basic conditions. A newmacrocyclic ligand containing a proton-ionizable pyrimidone subcyclic unitwas prepared in 88% yield by treating the appropriatepyrimidino-crown ether with 5 M NaOH in 50% (v/v) aqueous methanol.Preliminary complexation properties of some of these new compounds werestudied using various NMR spectral techniques. Good enantiomeric recognitionwas exhibited by a chiral pyrimidino-crown ether for the enantiomers of1-(-naphthyl)ethylammonium perchlorate.     

二硒杂冠醚的合成~≠

本文报道了二硒杂冠醚的合成及其谱图特征。