Ethyl 7'-(6-benz-yloxy-2,2-dimethyl-tetra-hydro-furo[3,2-d][1,3]dioxol-5-yl)-2-oxo-5',6',7',7a'-tetra-hydro-1'H,2H-spiro-[acenaphthyl-ene-1,5'-pyrrolo-[1,2-c][1,3]thia-zole]-6'-carboxyl-ate.
In the title compound, C(34)H(35)NO(7)S, the acenaphthyl-ene unit is essentially planar (r.m.s. deviation = 0.0335 Å). The pyrrolo-thia-zole ring system is folded about the bridging N-C bond; the thia-zolidine and pyrrolidine rings adopt S- and C-envelope conformations, respectively, with a 'butterfly' angle between the mean planes of 51.38 (10)°. The dioxolane and tetra-hydro-furan rings adopt O- and a C-envelope conformations, respectively, with a 'butterfly' angle between the mean planes of 57.12 (10)°. Two C atoms are each disordered over two positions with site-occupancy factors of 0.450 (7) and 0.550 (7). The crystal packing is stabilized by C-H⋯O inter-actions, generating an R(2) (2)(14) graph-set ring motif.
G
G
Jagadeesan
K
K
Sethusankar
R
R
Prasanna
R
R
Raghunathan