75340-02-2Relevant articles and documents
Studies on the total synthesis of Hirtellanine A: Regioselective synthesis of benzopyran
Zheng, Shu-Yan,Li, Xiao-Ping,Tan, Hong-Sheng,Yu, Chun-Hui,Zhang, Jing-Hua,Shen, Zheng-Wu
, p. 1356 - 1366 (2013/04/10)
The total synthesis of Hirtellanine A was accomplished by two different synthetic approaches. Hirtellanine A was assembled using a one-pot, tandem acid-mediated deprotection and tautomerization cascade starting from quinone derivative 23. The key features
Synthesis of 5,7-Dihydroxy-2',4',5'-trimethoxyisoflavone and Its 7-Methyl Ether (Robustigenin)
Nakayama, Mitsuru,Ohira, Susumu,Matsui, Takanao
, p. 831 - 832 (2007/10/02)
The treatment of 2,4,6-trihydroxy-2',4',5'-trimethoxydeoxybenzoin with benzyl chloride gave a dibenzyl ether.The condensation of the ether with ethyl formate, followed by the debenzylation of the resulting isoflavone, afforded 5,7-dihydroxy-2',4',5'-trimethoxyisoflavone, which was then converted into a pentamethoxyisoflavone.The partial demethylation of the pentamethoxyisoflavone gave 5-hydroxy-2',4',5',7'-tetramethoxyisoflavone, which was identical with natural robustigenin.