Pholidota

Pholidota Pangolin, Scaly Anteater 1 8 <1% Africa, South East Asia... 

In addition to bazzanin K (280), other structures coupled between a bibenzyl and a phenanthrene are (+)-cavicularin (298) [149], shancilin (299) [109], compounds 300 and 301 [150], and phoyunnanin D (302) from Pholidota yunnanensis [5]. The linkage of the bibenzyl and phenanthrene moiety of the latter four is via an ester bond, while bazzanin K (280) is linked via two-biphenol bonds and (+)-cavicularin (298) is via one biphenol bond and an ester bond. The structure of (+)-cavicularin (298) was further confirmed by X-ray crystallographic analysis [149]. 

Most of the dimeric phenanthrenoids are C-C linked between the two units. However, phoyurmanin E (420) from whole plant of Pholidota yunnanensis ROLFE. is connected at C-1 and C-7 through an ether bond [5]. In these studies on the allelochemical interaction, between the wetland plant Juncus acutus and microalgae, six unusual dimeric 9,10-dihydro- phenanthrenoids 426-431, have been isolated and identified [190,191] as having different connection patterns. Fig. (20). 

Taxonomy 4-Monomethylcycloartane Triterpenoids Pholidota chinensis Lindl (Orchidaceae) [1]. 

Guo XY, Wang J, Wang NL, Kitanaka S, Liu HW, Yao XS (2006) New stilhenoids fiom Pholidota yunnanensis and their inhibitory effects rai nitric oxide production. Chtan Pharm Buff 54 21-25... 

Jnu couplings have been used by Wright and co-workers to characterize karlotoxin 1, a new toxin from Karlodinium veneficum and by Ye and co-workers in structure elucidation of six new phochinenins A-F from Pholidota chinensis. 

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