J Comb Chem. 2009 Jul 31; Jiang M, Li T, Meng L, Yang C, Xie Y, Ding JC-5 arylated 2/9-substituted pyrimido[5,4-b]indolizines were synthesized via palladium-catalyzed direct arylation. A variety of substituents on both pyrimido[5,4-b]indolizines and aryl/heteroaryl bromides are tolerated, providing rapid access to substituted pyrimido[5,4-b]indolizines in good to excellent yields.

Zhongguo Zhong Yao Za Zhi. 2009 May; 34(10): 1225-7Ouyang F, Liu Y, Xiao H, Yu H, Wang N, Yao XOBJECTIVE: To study the chemical constitutents of the 60% ethanol extract of the stems of Sambucus williamsii. METHOD: Compounds were isolated and purified by Diaion D101, silica gel,Sephadex LH-20, ODS column chromatography and preparative HPLC. Their structures were identified by spectroscopic methods. RESULT: Seven lignans were isolated and identified as erythro-guaiacylglycerol-beta-O-4'-sinapyl ether (1), 1-( 4'-hydroxy-3'-methoxyphenyl) -2- [4"-( 3-hydroxypropyl) -2", 6"-dimethoxyphenoxy] propane-1,3-diol (2), isolariciresinol (3), burselignan (4), lyoniresinol (5), 5-methoxy-isolariciresinol (6), cycloolivil (7). CONCLUSION: All these compounds were obtained from this genus for the first time.