[Separation and purification of flavonoids from Smilax glabra by macroporous adsorption resin].

Objective: To investigate the process of separating and purifying flavonoids from Smilax glabra.

Method: With the yield of flavonoids as index, the optimum process of separating and purifying flavonoids from S. glabra Roxb was screened by static and dynamic adsorption tests.

[The optimum condition on baicalin extraction from Scutellaria baicalensis].

Objective: To optimize the extraction process of baicalin from Scutellaria Baicalensis Georgi with ethanol.

Methods: The extraction process of baicalin from Scutellaria Baicalensis Georgi was optimized with the aid of orthogonal experiments.

Results: The optimal parameters were obtained as follows: extracting temperature, extracting time, ethanol concentration and mechanical stirring speed were 80 degrees C, 1 h, 60% and 400 r/min, respectively.

[Synthesis of 2-(2,5-dihydroxyphenyl)-tetraphenylporphrin and its structure identification].

2-(2,5-dihydroxyphenyl)-tetraphenylporphrin 1',2-(2,5-dihydroxyphenyl)-tetraphenylporphyrinato Cu (II)2', Ni(II)3' and Zn(II)4' were synthesized by direct reaction of 2-nitro-5,10,15,20-tetraphenylporphrin 1 or its metallic complexes 2, 3, 4 with hydroquinone under heating without solvent. The yields were about 81%, 71%, 61% and 40% respectively for 1', 2', 3' and 4'. Their structures were determined by 1H NMR, 2D NMR, IR, MS and UV-Vis spectra.