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2-Ethyl-8-methoxy-methyl-4-oxo-4H-chromen-7-yl (1S,4R)-4,7,7-trimethyl-3-oxo-2-oxabicyclo-[2.2.1]heptane-1-carboxyl-ate

2-Ethyl-8-methoxy-methyl-4-oxo-4H-chromen-7-yl (1S,4R)-4,7,7-trimethyl-3-oxo-2-oxabicyclo-[2.2.1]heptane-1-carboxyl-ate

Ya Qiu, Ying Chen, Peng Xia

Acta Crystallogr Sect E Struct Rep Online. 2010 May 26;66(Pt 6):o1459.

PMID: 21579527

Abstract:

The title compound C(23)H(26)O(7), was prepared by esterification of 2-ethyl-7-hydr-oxy-8-methoxy-methyl-4H-chromen-4-one with (S)-(-)-camphanic chloride. The two rings of the chromone system are coplanar, making a dihedral angle of 1.99 (19)°, and the camphanoyl unit substituted at 7-O retains the original bicyclo-[2.2.1]heptane conformation of the starting reagent.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP39637746	(1S)-(−)-Camphanic chloride		39637-74-6	Price

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