Two new methoxylated flavones isolated from Casimiroa edulis La Llave and their MMP-9 inhibitory activity.

Casimiroa edulis La Llave is known to contain unusual 5,6-dimethoxyflavones bearing a variously oxygenated B-ring. Phytochemical investigation of the leaves and the roots of C. edulis achieved the isolation of two new methoxylated flavones, named casedulones A (1) and B (2), together with 12 known analogues. Their unique structures were established with the aid of spectral analyses and total syntheses. Pre-treatment with 20 µM of 1 and 2 suppressed MMP-9 expression in LPS-mediated THP-1 cells, indicating that the characteristic flavonoids in C. edulis could be potential anti-angiogenics for cancer prevention.

Citation

Manami Haba, Naohito Abe, Tetsuro Kamiya, Nagisa Mizuno, Satoshi Okubo, Takao Yamaura, Hirokazu Hara, Masayoshi Oyama. Two new methoxylated flavones isolated from Casimiroa edulis La Llave and their MMP-9 inhibitory activity. Natural product research. 2022 Mar 04:1-8

PMID: 35245426

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