Received 31 March 2009
In the title compound, C24H25NO7S, the sulfonyl-bound phenyl ring is approximately perpendicular to the indole ring system [dihedral angle = 87.72 (5)°]. The methyl group of one of the ester units is disordered over two positions with occupancies of 0.527 (13) and 0.473 (13). An intramolecular C-HO hydrogen bond is observed. In the crystal structure, molecules are linked into a ribbon structure running along the c axis by intermolecular C-HO hydrogen bonds and C-H interactions involving the pyrrole ring.
For general background on indoles, see: El-Sayed et al. (1986); Farhanullah et al. (2004); Okabe & Adachi (1998); Schollmeyer et al. (1995). For the Thorpe-Ingold effect, see: Bassindale (1984). For hybridization, see: Beddoes et al. (1986). For a related structure, see: Chakkaravarthi et al. (2008).
Data collection: APEX2 (Bruker, 2004); cell refinement: SAINT (Bruker, 2004); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEP-3 (Farrugia, 1997); software used to prepare material for publication: SHELXL97 and PLATON (Spek, 2009).
Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: CI2774 ).
TK thanks Dr Babu Varghese, SAIF, IIT-Madras, Chennai, India, for his help with the data collection.
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