Chemical constituents from the fermentation broth of actinomycete YIM48789

To study the chemical constituents from fermentation broth of actinomycete YIM48789.Six compounds were isolated by column chromatography.Their structures were elucidated based on spectral analysis and determined as 1-O-acetyl-mannitol (1),cyclo(Pro-Ser)(2),uridine(3),2’-deoxyuridine(4),adenosine(5),daucosterol (6).Compound 1 was firstly isolated from natural sources,compounds 2—6 have been isolated from this actinomycete for the first time.