Process for preparing distamycin derivatives

Organic compounds -- part of the class 532-570 series – Organic compounds – Heterocyclic carbon compounds containing a hetero ring...

Reexamination Certificate

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C530S332000, C530S300000, C530S333000, C514S018700, C514S019300, C514S020800, C548S312400, C548S312700, C548S313100, C548S314700, C548S364100, C548S365100, C548S518000

Reexamination Certificate

active

06906199

ABSTRACT:
It is described a process for preparing, in high yields and purity and without the need of carrying out several steps and/or isolating many intermediates which could lead to undesired by-products, a distamycin derivative of formulawherein R is a bromine or chlorine atom; or a pharmaceutically acceptable salt thereof. The compounds of formula (I) are useful in therapy as antitumor agents.

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