curcuminoid

Bisdemethoxycurcumin (Curcumin III) is a natural demethoxy derivative of curcumin. It is a potent activator of macrophage phagocytosis, interacting with 1α, 25-dihydroxy vitamin D3 to stimulate amyloid-β clearance by macrophages (optimal stimulation at 100 nM BDMC) [1]. More stable than curcumin in physiological media, BDMC suppresses proliferation of cancer cells [2]. It down-regulates the transcriptional coactivator p300, suppressing the Wnt/β-catenin pathway, and inhibits LPS induction of iNOS expression [3].

CLEFMA has anti-proliferative activity. CLEFMA inhibits tumor growth associated with NF-κB-regulated anti-inflammatory and anti-metastatic effects.

Dimethoxycurcumin (Veratrylcurcuminoid) is an analog of curcumin with more metabolical stability. Dimethoxycurcumin induces epigenetic changes in leukemia cells and the expression of promoter methylated genes.

FLDP-5, a blood-brain barrier (BBB) penetrant curcuminoid analogue, induces the production of Reactive Oxygen Species (ROS), DNA damage, and cell cycle S phase arrest. It demonstrates significant tumor-suppressive effects, exhibiting potent anti-proliferative and anti-migratory activities on LN-18 cells.

FLDP-8, a curcuminoid analogue, exhibits potent anti-cancer properties by inducing cell death in LN-18 cells at an IC50 value of 4 μM.

Cyclocurcumin is a minor curcuminoid derived from the rhizome of Curcuma longa that differs structurally from curcumin despite sharing the same molecular formula (C21H20O6), Cyclocurcumin features an α,β-unsaturated dihydropyranone moiety that drives trans–cis photoisomerization instead of the diketone/keto–enol tautomerism characteristic of curcumin. Cyclocurcumin demonstrates potent biochemical activities, including selective inhibition of human aromatase (CYP19A1) with an IC50 of 4.43 μM—approximately fivefold stronger than curcumin—making it valuable for studying estrogen-related pathways, and uniquely stimulates melanogenesis and melanin export in both melanocyte and melanoma models, positioning it as a promising research tool for investigating hypopigmentary skin disorders.