Resolution of inherently chiral anti-O,O′-dialkylthiacalix[4]arenes and determination of their absolute stereochemistries
摘要:
Inherently chiral anti-O,O'-dibenzyl- and anti-O,O'-dibutyl-p-tert-butylthiacalix[4]arenes 4 and 6 are resolved as (S)-2-methoxy-2-(naphthalen-1-yl)propionic esters by flash chromatography. The absolute stereochemistries were determined to be (Sa)-(+)-4 and (S-a)-(+)-6 by X-ray crystallographic analyses. (C) 2008 Elsevier Ltd. All rights reserved.
Resolution of inherently chiral anti-O,O′-dialkylthiacalix[4]arenes and determination of their absolute stereochemistries
摘要:
Inherently chiral anti-O,O'-dibenzyl- and anti-O,O'-dibutyl-p-tert-butylthiacalix[4]arenes 4 and 6 are resolved as (S)-2-methoxy-2-(naphthalen-1-yl)propionic esters by flash chromatography. The absolute stereochemistries were determined to be (Sa)-(+)-4 and (S-a)-(+)-6 by X-ray crystallographic analyses. (C) 2008 Elsevier Ltd. All rights reserved.