Studies on chemical constituents in heartwood of Taxus cuspidata / 中国中药杂志

<p><b>OBJECTIVE</b>To study the chemical constituents in the heartwood of Taxus cuspidata.</p><p><b>METHOD</b>Silica gel column chromatography, preparative HPLC and preparative TLC were used to isolate and purify the chemical constituents; 1H- and 13C-NMR spectroscopic methods were used for structural identification.</p><p><b>RESULT</b>Ten compounds, taxinine (1), taxusin (2), beta-sitosterol (3), 1 beta-hydroxybaccatin I (4), 2alpha, 5alpha, 10beta-triacetoxy-14beta-(2'-methyl) butanoyloxy-4 (20), 11-taxadiene (5), 2alpha, 5alpha, 10beta-triacetoxy-14beta-(2'-methyl-3'-hydroxy-butanoyloxyl-4 (20), 11-taxadiene (yunnanxane) (6), 9alpha, 10beta, 13alpha-triacetoxy-5alpha-cinnamoyltaxa-4 (20), 11-diene (7), 2-deacetoxytaxinine J (8), taxezopidine G (9), 2alpha, 7beta, 9alpha, 10beta, 13alpha-pentaacetoxyl-taxa-4 (20), 11-dien-5-ol (5-decinnamoyltaxinine J) (10), were isolated and identified from the heartwood of T. cuspidata.</p><p><b>CONCLUSION</b>Three taxanes, 1 beta-hydroxybaccatin I (4), 2alpha, 5alpha, 10beta-triacetoxy-14beta-(2'-methyl-3'-hydroxy-butanoyloxy)-4 (20), 11-taxadiene (yunnanxane) (6), and 2alpha, 7beta, 9alpha, 10beta, 13alpha-pentaacetoxyltaxa-4 (20) , 11-dien-5-ol (10), were obtained from this plant for the first time.</p>

Studies on chemical constituents in seeds of Taxus mairei II / 中国中药杂志

<p><b>OBJECTIVE</b>To study the chemical constituents in seeds of Taxus mairei.</p><p><b>METHOD</b>Preparative HPLC, TLC and spectroscopic analyses were used to isolate and elucidate the chemical constituets in the plant.</p><p><b>RESULT</b>Seven taxane diterpenoids were isolated from the seeds of T. mairei and identified as taxinine A(1), 9-deacetyltaxinine(2), 9-deacetyltaxinine E(3), 2-deacetyltaxinine(4), taxezopidine G(5), 2-deacetoxytaxinine J(6), 2-deacetoxytaxuspine C(7).</p><p><b>CONCLUSION</b>Except compounds 5,6, all the compounds were obtained from seeds of this plant for the first time.</p>

Ethical Reflections on Hospital Administration / 中国医学伦理学

Based on their multiple years of personal experiences in hospital administration,authors of this article point out that medical service,humanistic service,and emotional service should be the core aspects in the current hospital competition.Medical professionalism embodied in the three levels of consciousness,behaviors,and regulations should be the main subject in the research on the role of medical ethics in hospital administration and medical treatment behaviors.It is an urgent ethical requirement and the chief task for hospital administrators to achieve humanistic medical service through humanistic administration of hospitals.