Vasicinone is a quinazoline alkaloid. Hepatoprotective activity of vasicinone has being shown in mice. Pre-treatment with vasicinone and silymarin (25 mg/kg/day for 7 days) significantly decreased CCl4-induced increase in SGOT, SGPT, ALP levels. Vasicinone has shown cytotoxic and antiproliferative activity in several tumor cell lines. Vasicinone, an oxidation product of vascinine is a potent bronchodialator. Vasicinone could be utilised in alternate anti asthmatic therapy, since it plays a vital role in scavenging Nitric oxide which could prevent the bronchial inflammation in asthmatic patients.

Fisetin, a natural flavonoid found in various fruits, vegetables, and nuts, has various biological properties, including anti-inflammatory, anti-oxidant, neuroprotective in cell culture and in animal models relevant to human diseases. Fisetin can be also a promising agent for the treatment of uveal melanoma. Besides, it is a therapeutic agent for respiratory inflammatory diseases such as chronic obstructive pulmonary disease (COPD), where fisetin inhibits the TNF-α-activated IKK/NF-κB cascade by targeting PKCδ. In vitro and in vivo experiments have revealed that fisetin possesses significant therapeutic effects against diabetic complications and atherosclerosis, where it can suppress vascular inflammatory processes.