A mixed crystal of imperatorin and phellopterin, with C--H...O, C--H...pi and pi-pi interactions

Philip J Cox; Marcel Jaspars; Yashodharan Kumarasamy; Lutfun Nahar; Satyajit D Sarker; Mohammad Shoeb

doi:10.1107/s0108270103012459

A mixed crystal of imperatorin and phellopterin, with C--H...O, C--H...pi and pi-pi interactions

Acta Crystallogr C. 2003 Sep;59(Pt 9):o520-2. doi: 10.1107/s0108270103012459. Epub 2003 Aug 16.

Authors

Philip J Cox¹, Marcel Jaspars, Yashodharan Kumarasamy, Lutfun Nahar, Satyajit D Sarker, Mohammad Shoeb

Affiliation

¹ School of Pharmacy, The Robert Gordon University, Aberdeen, Scotland. [email protected]

PMID: 12944664
DOI: 10.1107/s0108270103012459

Abstract

The crystal structure of 9-(3-methylbut-2-enyloxy)-7H-furo[3,2-g]chromen-7-one-4-methoxy-9-(3-methylbut-2-enyloxy)-7H-furo[3,2-g]chromen-7-one (0.926/0.074), 0.926C(16)H(14)O(4)*- x 0.074C(17)H(16)O(5), is characterized by two independent imperatorin molecules in the asymmetric unit, which exhibit different side-chain conformations. A small amount of phellopterin overlaps with one of the two imperatorin molecules. The supramolecular structure is supported by C--H...O, C--H...pi and pi-pi interactions.