Total synthesis of daurichromenic acid

Details Total synthesis of daurichromenic acid Total synthesis of daurichromenic acid

2006-09-05

2006-09-05

Tsang, Cecilia J. (Department: 1625)

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C549S406000

Reexamination Certificate

active

07102020

ABSTRACT:
The present invention provides a method to prepare 2H-benzo[6]pyrans, such as the anti-HIV natural product daurichromenic acid (1a), by microwave-assisted tandem aldol reaction of a phenolic enolate followed by intramolecular SN2′ type cyclization to form the 2H-benzo[6]pyran core structure.

REFERENCES:
Kashiwada, Y., et al., “Isolation of Rhododaurichromanic Acid B And The Anti-HIV Principles Rhododaurichromanic Acid A And Rhododaurichromenic Acid From Rhododendron Dauricum”,Tetrahedron, 57, (2001),1559-1563.

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