Cyclohexapeptide compounds, processes for their production...

Drug – bio-affecting and body treating compositions – Designated organic active ingredient containing – Peptide containing doai

Reexamination Certificate

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Reexamination Certificate

active

10031764

ABSTRACT:
A cyclohexapeptide compound of general formula (I), wherein R1is C1–C20alkyl; C9–C20alkenyl; C9–C20alkoxyphenyl; an aryl group selected from: phenyl, biphenyl, terphenyl and naphthyl; C1–C12alkylphenyl, C2–C12alkenylphenyl, C1–C12alkoxyphenyl; linoleoyl; palmitoyl; 12-methylmyristoyl; 10,12-dimethylmyristoyl; or —COC6H4(p)OC8H17, R1and R3are independently —OH; —CN; —CH2NH2; —N3; aryl; substituted aryl; heterocyclyl and substituted heterocyclic with 1–3 of the same or different heteroatoms; aminoalkylamino; mono or di-substituted linear or cyclic aminoalkylamino; —OR, wherein, R is C1–C12alkyl; substituted alkyl of the type —(CH2)n—X, where n is 1–5 and X is Cl, Br, I, COOY, CN, NH2or a heterocyclic and where Y is C1–C6linear or branched alkyl; C2–C12-alkenyl; aryl; fused aryl; substituted aryl; a heterocyclic containing 1–3 heteroatoms; mono or di-substituted aminoalkyl; or a hydroxy protecting group; and R3may additionally be imidazolyl; R2and R4are independently —H or —OH; R5is —H or —CH3, R6is —H, —CH3or —CH2CONH2. R7is —H, —CH3or —OH. R8and R9are independently —H or —CH2-Sec.amine in which the sec.amine is attached to —CH2through its N linkage; and its pharmaceutically acceptable salts. The compounds are useful as antifungal agents.

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patent: 5914313 (1999-06-01), Bouffard
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“Synthesis . . . Pneumonia”, Journal of Medicinal Chemistry, US, American Chemical Society, Washington, vol. 35, No. 1, Jan. 10, 1992, pp. 194-198.
“Mulundocandin . . . Antibiotic”, Journal of Antibiotics, vol. XL, No. 8, Mar. 1987, pp. 275-280.

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