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In this paper, we investigated the chemical components of the flowers of Cymbidium Lunagrad Eternal Green for the first time. In the whole post-fertilization, a new alkaloid, named Lunagrad A (1), and a new aromatic glucoside, named Lunagrad B (2), were isolated from the MeOH extract of the flowers of Cymbidium Lunagrad Eternal Green, along with other six known aromatic compounds (3-8) and three flavone glucosides (9-11). These structures were determined on the basis of NMR experiments, as well as chemical evidence. [ABSTRACT FROM AUTHOR]

A new adenosyl-alkaloid, ostrerine A (1), has been isolated along with an amino acid, tryptophan (2) and a ribonucleoside, 2′-deoxythymidine (3) from the Quanzhou marine mollusk, Ostrea rivularis , and the structures were elucidated by 1D and 2D NMR experiments, including 1 H- 1 H COSY, TOCSY, NOESY, HMQC, and HMBC methods. [ABSTRACT FROM AUTHOR]

The total synthesis of a natural product alkaloid fusaric acid (FA), which exhibits herbicide, fungicide, insecticide and even diverse notable pharmacological activities, was accomplished in four steps using commercially available materials. The synthesis, based on a unified and flexible strategy using 6-bromonicotinaldehyde as a common intermediate, is concise, convergent, practical and can be carried out on a two-gram scale. This approach could be readily applicable to the synthesis of its analogues. In addition, FA had a wide range of inhibitory activities against 14 plant pathogenic fungi in this study, which demonstrated that as a leading compound, and it has great potential to be further developed as an agricultural fungicide. [ABSTRACT FROM AUTHOR]