Index the literatures in CNKI

ACS

ScienceDirect

and Wiley Online Library databases from 1993 to 2012 choosing titles or keywords as 'Polymethoxylated Flavones (PMFs)'. Up to now

PMFs reported home and abroad has almost 80

and they were found widely distributed in the plants

such as Rutaceae and Rubiaceae . However

there is little systemic summary on them. This paper sums up the structural features

distribution

preparation methods and pharmacological effects of PMFs

and provides useful references for the further research for the development of plant resources of PMFs.