Explanation:

Recently, scientists have found the first synthetic route for producing flavonoids molecules related to the treatment of tuberculosis and chikungunya. 

• These molecules have so far been isolated from plants only and are found to inhibit tuberculosis and chikungunya. 
• Flavonoids are part of the polyphenol class of phytonutrients (plant chemicals) found in almost all fruits and vegetables. Along with carotenoids (organic pigments), they are responsible for the vivid colours in fruits and vegetables.
• Polyphenols have historically been used in Chinese and Ayurvedic medicine and are associated with skin protection, brain function, blood sugar and blood pressure regulation.

Hence only statement 1st is correct.