1R,1 ' R,3S,3 ' S)-5,5 ',10,10 '-Tetramethoxy-1,1 ',3,3 '-tetramethyl-3,3 ',4,4 '-tetrahydro-1H,1 ' H-8,8 '-bi[benzo[g]isochromene]

Sejberg, JJP; Sperry, Jonathan; Choi, Ka; Boyd, Peter; Brimble, Margaret

1R,1 ' R,3S,3 ' S)-5,5 ',10,10 '-Tetramethoxy-1,1 ',3,3 '-tetramethyl-3,3 ',4,4 '-tetrahydro-1H,1 ' H-8,8 '-bi[benzo[g]isochromene]

Sejberg, JJP ; Sperry, Jonathan ; Choi, Ka ; Boyd, Peter ; Brimble, Margaret

Identifier: http://hdl.handle.net/2292/7740

Issue Date: 2008

Reference: Acta Crystallogr Sect E Struct Rep Online 64(Pt 4):o758 2008

Rights: Copyright: International Union of Crystallography

Rights (URI): https://researchspace.auckland.ac.nz/docs/uoa-docs/rights.htm
Rights (URI): http://journals.iucr.org/services/copyrightpolicy.html

Abstract:

In the title compound, C34H38O6, the methyl groups on each pyran ring exhibit 1,3-cis stereochemistry, established during synthesis by pseudo-axial delivery of hydride during a lactol reduction step. In the crystal structure, the molecule lies on a twofold rotation axis and the torsion angle about the central diaryl bond is 41.3 (1)degrees. The molecules pack in a herringbone arrangement.

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