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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 

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Studies on 4-hydroperoxycyclophosphamide (NSC-181815): a simple preparation method and its application for the synthesis of a new class of "activated" sulfur-containing cyclophosphamide (NSC-26271) derivatives.

4-Hydroperoxycyclophosphamide was obtained in approximately 20% yield by ozonization of cyclophosphamide in acetone/water at 0 degrees C. It was reduced to 4-hydroxycyclophosphamide, which was treated with several mercaptans to yield compounds of the type 4-(S-R)-mercapto-cyclophosphamide. In the solid state these compounds are stable at room temperature; in aqueous solution they are hydrolyzed to 4-hydroxycyclophosphamide or its tautomer, aldophosphamide. One of the 4-(S-R)-mercapto-cyclophosphamide compounds was tested biologically in vitro against Yoshida ascites tumor cells and showed the same cytotoxic activity as 4-hydroxycyclophosphamide.[1]

References

  1. Studies on 4-hydroperoxycyclophosphamide (NSC-181815): a simple preparation method and its application for the synthesis of a new class of "activated" sulfur-containing cyclophosphamide (NSC-26271) derivatives. Peter, G., Wagner, T., Hohorst, H.J. Cancer treatment reports. (1976) [Pubmed]
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