ZHANG Hong-chi, LIU Rui, LI Hui, et al. Isolation and Identification of Secondary Metabolites from Endophytic sp. in Astragali Radix[J]. Chinese journal of experimental traditional medical formulae, 2017, 23(4): 71-75.
ZHANG Hong-chi, LIU Rui, LI Hui, et al. Isolation and Identification of Secondary Metabolites from Endophytic sp. in Astragali Radix[J]. Chinese journal of experimental traditional medical formulae, 2017, 23(4): 71-75. DOI: 10.13422/j.cnki.syfjx.2017040071.
Objective: To study on secondary metabolites of endophytic fungus Rhizopus sp. from Astragali Radix. Method: AR02 was isolated from Astragali Radix by the method of histology. The fungus was identified by morphological method combined with molecular biology method. Large-scale fermentation of endophytic fungi used solid culture method. The compounds were isolated by column chromatography
Sephadex LH-20
and HPLC. They were identified on the basis of physic-chemical constants and spectral analysis. Result: Endophytic fungi AR02 isolated Astragali Radix were identified as Rhizopus sp. Seven compounds were obtained and elucidated as tryptanthrin (1)
lawsaritol A (2)
kojic acid (3)
trypacidin (4)
monomethylsulochrin (5)
emodin 8-O-methylether (6) and cannabifolactone A (7). Conclusion: Compounds 1-3
6 and 7 were isolated from the endophytic fungi of Astragali Radix for the first time. The secondary metabolites of Rhizopus sp. appear in several categories and the endophytic fungus
Rhizopus sp. from Astragali Radix is a promising source for active substances.