A series of novel compounds were prepared in which the aromatic ring of the drug quinacrine (2‐methoxy‐6‐chloro‐9‐alkylaminoacridine) is linked to the nucleotide bases adenine, guanine and thymine by penta‐and hexamethylene bridges.
NR4 7TJ l H N.m.r. parameters are reported for various six-membered ring sulphoxides. Chemical shift and coupling constant data reveal that the oxides of thian-3-one and 3-dicyanomethylenethian adopt preferentially the axial S=O
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