Synthesis of binuclear phenoxyimino organoaluminum complexes and their use as the catalyst precursors for efficient ring-opening polymerisation of ε-caprolactone.

A series of novel binuclear phenoxyimino organoaluminum complexes of the type [(RN=CH)C6H3OAlMe2]2 [R = C6H5 (2a), 2,6-(i)Pr2C6H3 (2b), 2,6-Ph2C6H3 (2c), adamantyl (2d), (t)Bu (2e)] have been prepared in high yields, and these complexes were identified by (1)H, (13)C NMR and elemental analysis. Structural analysis for 2a-e revealed that these complexes have a distorted tetrahedral geometry around Al and both the Al-O and the Al-N bond distances were considerably influenced by substituents in the imino groups. The complexes were tested as catalyst precursors for ring-opening polymerisation (ROP) of ε-caprolactone (CL) in the presence of BnOH, and their catalytic activities were strongly affected by the catalyst structures and polymerisation conditions.

[Clinical analysis of drug-induced Pseudo-Bartter's syndrome: a report of five cases].

Objective: To summarize the clinical characteristics and outcomes of Pseudo-Bartter's syndrome and explore its pathogenesis.

Methods: The clinical data of 5 cases of Pseudo-Bartter's syndrome at our ward from May 2008 to December 2010 was analyzed retrospectively.

Results: All patients were female.

[Identification of a mutation in exon 4 of apolipoprotein E gene in a family affected with lipoprotein glomerulopathy].

Objective: To identify potential mutation of apolipoprotein E (apoE) gene in a male patient affected with lipoprotein glomerulopathy (LPG), his mother and his sister.

Methods: The patient and his mother both had histologically confirmed LPG. His sister and his father were asymptomatic.