Chemical Constituents of Pholidota cantonensis Rolfe
作者单位:Hunan Province Engineering Research Center of Bioactive Substance Discovery of Chinese MedicineHunan University of Chinese Medicine Department of PharmacognosyUniversity of Mississippi
会议名称:《第一届《药学学报》药学前沿论坛暨2015年中国药学会中药与天然药物专业委员会会议》
会议日期:2015年
学科分类:1008[医学-中药学(可授医学、理学学位)] 1006[医学-中西医结合] 100602[医学-中西医结合临床] 10[医学]
关 键 词:Pholidota cantonensis Orchidaceae diterpenoid new compound
摘 要:The genus Pholidota(Orchidaceae) belongs to the tribe Coelogyneae,and comprises ca.30 species with a distribution from tropical Asia to tropical *** them,ca.14 species occur in *** Cantonensis Rolfe.,named ’Xi-Ye-Shi-Xian-Tao’ in Chinese,is a Chinese folk herbal medicine,with a long history of safe use for treating sore throat,tonsillitis,cough phlegm asthma,pneumonia,acute soft tissue trauma and *** phytochemical study on *** showed the existence of stibenoids,cycloartane triterpenoid and *** on the previous study the 80%ethanol extract of the whole plant *** was separated by chromatography on silica gel,Sephadex LH-20,MCI gel and afford22 compounds,the structures of compounds were elucidated on the basis of the chemical evidence and H-NMR,C-NMR,2D-NMR and MS *** new constituents were isolated by the column chromatography over silica gel,MCI gel,RP-18 silica gel,Sephadex LH-20 and pre-HPLC from the EtOH extract of the air-dried whole plant of Pholidota cantonensis Rolfe.,together with 18 known *** structures of the new compounds were established as l-hydroxy-2,7-dimethoxy-9,10-dihydrophenanthrene-[4,5-bcd]furan(1),5-hydroxy-2,7-dimethoxy-9,10-dihydro-l,4-Phenanthrenedione(2),ent-labd-13(E)-ene-3α,8β,15-tri-3-O-β-D-glucopyranoside(3),5α,10β-ent-cleroda-3,13(E)-diene-15,18-diol-15-0-β-D-glucopyrannoside-18-O-β-Dglucopyrannoside(4) by chemical and spectroscopic methods,including ID and 2D NMR.