2,6-Dichloro-9-thiabicyclo[3.3.1]nonane: a privileged, bivalent scaffold for the display of nucleophilic components.

The title compound, the condensation product of sulfur dichloride and 1,5-cyclooctadiene, is a reliable acceptor of a wide variety of heteroatom nucleophiles, sometimes in reversible fashion. Optical resolution of the core structure has been achieved and preserved in succeeding transformations. The high reactivity and reliable stereochemical control afforded by this system illustrates the power of neighboring-group participation by the sulfur center.

Strain differences in inbred rats: influence of strain and diet on haematological traits.

5 inbred strains of rats maintained on 3 commercial pelleted diets were investigated for differences in haematological traits on the 154th day of age. Number, size and haemoglobin content of the erythrocytes were shown to be strongly influenced by strain and diet. While the strain AS/Ztm was always found in a high position within the ranking order of strains, the strain DA/Ztm was always found in a low position. For nearly all haematological traits, diet II (Altromin C1000) resulted in the highest values. This was not due to a difference in the content of iron (Fe), because even though diet III (Altromin 1534) contained only 50% of the Fe in diet I (Altromin 1324), differences between these two diets were small. Significant interactions between strain and diet were shown to exist for the mean corpuscular volume (MCV) and the mean corpuscular haemoglobin (MCH). Strong genetic correlations were found between haematocrit (HCT) and haemoglobin (Hb) and between MCV and MCH, while the number of red blood cells (RBC), Hb, HCT, MCV and MCH correlated significantly within each strain. However, these environmental correlations have to be interpreted with caution, because these variables are not determined independently.