Regioselective and stereoselective oxidation of fused ring...

Organic compounds -- part of the class 532-570 series – Organic compounds – Cyclopentanohydrophenanthrene ring system containing

Reexamination Certificate

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Reexamination Certificate

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07728157

ABSTRACT:
An efficient method for the synthesis of aminosterol compounds such as squalamine and compound 1436 is described. A method of the invention provides for regioselective sulfonation of a fused ring system. The fused ring system base can be, for example, a steroid ring base. The aminosterol compounds are effective as, among others, antibiotics, antiangiogenic agents and NHE3 inhibitors.

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