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Abstract

Antibiotic Actinomadura-L-31 A has the characteristics as the hydrochloride salt: appearance: white or pale yellow powder melting point: non-clear melting point specific rotation: [.alpha.].sub.D.sup.25 -34.degree. (C: 0.5, pH: 7.5 water) elementary analysis: (found) C: 51.71%; H: 6.23%; O: 21.03%; N: 13.94%; S: 5.82%; Cl: 1.17% constitutive aminoacids: aspartic acid; glutamic acid; glycin; valine; phenylalanine; histidine; leucine; tryptophan ultraviolet absorption spectrum: FIG. 1, maximum absorption: 280 nm: E.sub.1 cm.sup.1% =45.2 290 nm: shoulder E.sub.1 cm.sup.1% =38 infrared spectrum: FIG. 2, absorption (cm.sup.-1) 3350, 3050, 2950, 1660, 1530, 1430, 1395, 1340, 1255, 1235, 1100, 745, 700 Antibiotic Actinomadura-L-31 B has the characteristics as the hydrochloride salt: appearance: white to pale yellow powder melting point: non-clear melting point specific rotation: [.alpha.].sub.D.sup.25 -26.degree. (C: 0.5; pH: 7.5 water) elementary analysis: (found) C: 51.10%; H: 6.34%; O: 20.75% N: 14.81%; S: 5.91%; Cl: 1.08% constitutive aminoacids: aspartic acid; threonine; glutamic acid; proline; glycin; valine; phenylalanine; tryptophan ultraviolet absorption spectrum: FIG. 3, maximum absorption: 280 nm: E.sub.1 cm.sup.1% =44.8 290 nm: shoulder E.sub.1 cm.sup.1% =37.3 infrared spectrum: FIG. 4, absorption (cm.sup.-1) 3350, 3050, 2950, 1660, 1520, 1440, 1390, 1340, 1260, 1230, 1100, 745, 700.

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First Claim