Asymmetric syntheses of daedalin A and quercinol and their tyrosinase inhibitory activity

Stereoselective syntheses of daedalin A and quercinol, an enantiomer of daedalin A, is described. The tyrosinase inhibitory activities of daedalin A and quercinol were examined. The activity of quercinol was weaker than that of daedalin A at high concentration.ArticleBIOORGANIC & MEDICINAL CHEMISTRY LETTERS. 20(3):1063-1064 (2010)journal articl

AN EFFICIENT SYNTHESIS OF PROCYANIDINS USING EQUIMOLAR CONDENSATION OF CATECHIN AND/OR EPICATECHIN CATALYZED BY YTTERBIUM TRIFLATE

Stereoselective synthesis of catechin and epicatechin dimers under intermolecular condensation of equimolar amount of catechin derivatives catalyzed by Yb(OTf)(3). The coupled products were successfully converted to procyanidins B1, B2, B3, and B4, respectively. Procyanidins B1, B2, B3, and B4 could be used as standard compounds for identifying the polyphenols in natural source.ArticleHETEROCYCLES. 79:549-563 (2009)journal articl

A successful case of a para-aortic lymphocele treated with autologous peripheral blood injection

A lymphocele is one of the complications of systematic pelvic or para-aortic lymphadenectomy. Although most patients are entirely asymptomatic, our patient exhibited an obstructive ileus at the jejunum compressed by a lymphocele. We report here a case of a subsequent para-aortic lymphocele treated with autologous peripheral blood injection. A 68-year-old woman with sigmoid colon cancer (T3N2bM1a) underwent laparoscopic sigmoidectomy. After 4 courses of chemotherapy (CapeOX + Bmab), para-aortic lymphadenectomy was additionally performed. One month later, an obstructive ileus occurred suddenly due to a lymphocele. A drainage catheter was placed into the lymphocele and a total of 35 mL of autologous peripheral blood was injected in 4 divided doses through the catheter. The volume of the lymphocele gradually reduced and the ileus improved after blood injection. This is the first report of a successful case of a subsequent para-aortic lymphocele treated with autologous peripheral blood injection without any complications