190077-91-9

Upstream product

• 190077-90-8 (2S,4R,6S)-4-acetoxy-2-(3',4'-dihydroxyphenyl)-6-pentyltetrahydropyran 
• 473845-05-5 (2S,4R,6S)-4-acetoxy-2-(3',4'-diacetoxyphenyl)-6-pentyltetrahydropyran 
• 67727-64-4 3,4-diacetoxybenzaldehyde 
• 473845-04-4 (S)-1-(3',4'-diacetoxyphenyl)but-3-en-1-ol 

Relevant academic research and scientific papers

Isolation, structure, and biological activities of long-chain catechols of Plectranthus sylvestris (Labiatae)

Antioxidant activity guided fractionation of extracts of the aerial parts of the title plant and HPLC separation yielded a series of oxygenated long-chain alkylcatechols. Their structures were inferred by spectroscopic methods and chemical transformations

Prins cyclizations: labeling studies and application to natural product synthesis.

The first syntheses of two natural products, catechols 1 and 2, isolated from Plectranthus sylvestris (labiatae), are reported. Oxygen-18 labeling studies support the proposed intermediacy of a stabilized benzylic cation in the acid-promoted cyclization of an aldehyde and benzylic homoallylic alcohol possessing an electron-rich aromatic ring. In contrast, with an electron-deficient aromatic ring the pathway via a benzylic cation is only minor. [reaction: see text]