One-Pot Total Synthesis of Cannabinol via Iodine-Mediated Deconstructive Annulation. 2019

Diego Caprioglio, and Daiana Mattoteia, and Alberto Minassi, and Federica Pollastro, and Annalisa Lopatriello, and Eduardo Muňoz, and Orazio Taglialatela-Scafati, and Giovanni Appendino
Dipartimento di Scienze del Farmaco , Università del Piemonte Orientale , Largo Donegani 2 , 28100 Novara , Italy.

The thermal degradation of cannabichromene (CBC, 3) is dominated by cationic reactions and not by the pericyclic rearrangements observed in model compounds. The rationalization of these differences inspired the development of a process that coupled, in an aromatization-driven single operational step, the condensation of citral and alkylresorciniols to homoprenylchromenes and their in situ deconstructive annulation to benzo[c]chromenes. This process was applied to a total synthesis of cannabinol (CBN, 5) and to its molecular editing.

UI MeSH Term Description Entries
D007455 Iodine A nonmetallic element of the halogen group that is represented by the atomic symbol I, atomic number 53, and atomic weight of 126.90. It is a nutritionally essential element, especially important in thyroid hormone synthesis. In solution, it has anti-infective properties and is used topically. Iodine-127,Iodine 127
D002186 Cannabinoids Compounds having the cannabinoid structure. They were originally extracted from Cannabis sativa L. The most pharmacologically active constituents are TETRAHYDROCANNABINOL; CANNABINOL; and CANNABIDIOL. Cannabinoid
D002187 Cannabinol A physiologically inactive constituent of Cannabis sativa L.
D001578 Benzopyrans Compounds with a core of fused benzo-pyran rings. Benzopyran,Chromene,Chromenes

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