N,N′-[(8-endo,11-endo-Dihy­droxy­penta­cyclo­[5.4.0.02,6.03,10.05,9]undecane-8,11-di­yl)bis­(methyl­enecarbon­yl)]di-l-phenyl­alanine

tert-Butyl N-[(11-exo-benzyl­oxy­carbonyl-8-oxopenta­cyclo­[5.4.0.02,6.03,10.05,9]undecane-11-endo-yloxy)carbon­yl­methyl]carbamate

The structure of the title compound, C(26)H(29)NO(7), at 173 K has an inter-molecular N-H⋯O hydrogen bond. This is one of the few examples where a mono-ketone penta-cyclo-undecane (PCU) mol-ecule exibits hydrogen bonding in the solid state. The dihedral angles of the amide and ester groups are normal and unaffected by the cage structure. A longer than normal C-C bond [1.571 (4) Å] was found wit...

STUDIES IN REGIOSPECIFIC OXIDATION REACTIONS OF 1-METHYL PENTACYCLO[5.4.0.02,6.03,10.05,9]UNDECANE–8,11–DIONE Indu Vappala, M.Sc Thesis Prepared for the Degree of MASTER OF SCIENCE UNIVERSITY OF NORTH TEXAS

Crystal structure of the cage derivative penta­cyclo­[5.4.0.02,6.03,10.05,9]undeca-8,11-dione ethyl­ene di­thio­ketal

The title penta-cyclo-undecane cage derivative, C13H14OS2, was identified during a thio-ketalization reaction. The reaction selectively gave the title compound and the product corresponding to bis-ketal was not formed. The title compound exhibits unusual Csp (3)-Csp (3) single bond lengths ranging from 1.495 (3) to 1.581 (2) and strained bond angles as small as 89.29 (12) and as large as 115.11...

endo-11-(Dibenzyl­amino)­tetra­cyclo­[5.4.0.03,10.05,9]undecane-8-one

The structure of the title compound, C(25)H(27)NO, is a mono-ketone penta-cyclo-undecane (PCU) mol-ecule bearing a tertiary amine group. One of the methyl-ene groups in the PCU is disordered over two orientations with site-occupancy factors of 0.621 (7) and 0.379 (7).

1,7-Dimethyl­penta­cyclo­[5.4.0.02,6.03,10.05,9]undecane-8,11-dione

The structure of the title compound, C(13)H(14)O(2), a penta-cyclo-undecane cage derivative, exhibits unusual Csp(3)-Csp(3) single-bond lengths ranging from 1.505 (3) to 1.607 (2) Å and strained bond angles as small as 88.7 (1)° and as large as 121.0 (2)°. In this meso compound, an inter-nal non-crystallographic mirror plane exists, bis-ecting the mol-ecule. In the crystal, weak C-H⋯O hydrogen ...