1H and 13C NMR assignments for two oxaphenalenones bacillosporin C and D from the mangrove endophytic fungus SBE-14.
The complete (1)H and (13)C NMR assignments are reported for the novel natural product Bacillosporin D together with the known compound Bacillosporin C. These compounds containing seven rings were isolated from the mangrove endophytic fungus SBE-14 from the South China Sea. 1D and 2D NMR experiments, including COSY, HMQC and HMBC were used to the determination of the structures and NMR assignments. It is proposed that 1 was biogenetically produced by transforming 2. Transforming a lactone to an anhydride is unusual in nature.
Guo
Zhiyong
Z
School of Chemistry and Chemical Engineering, Sun Yat-Sen University, Guangzhou 510275, PR China.
Shao
Changlun
C
She
Zhigang
Z
Cai
Xiaoling
X
Liu
Fan
F
Vrijimoed
L L P
LL
Lin
Yongcheng
Y
D002247:Carbon Isotopes; D002681:China; D005658:Fungi / Q000737:chemistry*; D006576:Heterocyclic Compounds, 4 or More Rings / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy; D009792:Oceans and Seas; D043803:Phenalenes / Q000737:chemistry*; D011522:Protons
D002247:Carbon Isotopes; D006576:Heterocyclic Compounds, 4 or More Rings; D043803:Phenalenes; D011522:Protons; C521460:bacillosporin C; C521461:bacillosporin D; C038036:phenalen-1-one