Antibiotics TKR1912-I and TKR1912-II and process for producing the same
    136.
    发明授权
    Antibiotics TKR1912-I and TKR1912-II and process for producing the same 失效
    抗生素TKR1912-II及其制备方法

    公开(公告)号:US6068839A

    公开(公告)日:2000-05-30

    申请号:US913250

    申请日:1998-07-10

    CPC分类号: C12P1/00 C12P1/02

    摘要: Novel antibiotics useful as a remedy for fungal infections and a process for producing antibiotic TKR1912-I or pharmacologically acceptable salts thereof, which substances have such plysicochemical properties that (1) the mass spectrum thereof according to FAB-MS has a peak of m/z of 559 [M+H].sup.+ ; (2) the molecule bears 26 carbon atoms and no nitrogen atom; (3) the ultraviolet absorption spectrum thereof in methianol shows a terminal absorptions; (4) the main absorption wavenumbers of the infrared absorption spectrum according to the KBr method are 3430, 2920, 2850, 1740, and 1190 cm.sup.-1 ; and (5) they are soluble in methanol, chloroform, and water, but are sparingly soluble in hexane.

    摘要翻译: PCT No.PCT / JP96 / 00565 Sec。 371日期:1998年7月10日 102(e)1998年7月10日PCT 1996年3月8日PCT公布。 公开号WO96 / 28456 日期1996年9月19日新型抗生素可用作真菌感染的治疗方法和生产抗生素TKR1912-I或其药理学上可接受的盐的方法,该物质具有以下特性:(1)根据FAB-MS的质谱具有 m / z峰为559 [M + H] +; (2)分子具有26个碳原子,不含氮原子; (3)甲基酚中的紫外吸收光谱显示终端吸收; (4)KBr法红外吸收光谱的主要吸收波数分别为3430,2920,2850,1740和1190cm-1; 和(5)它们可溶于甲醇,氯仿和水,但微溶于己烷。

    Restriction endonuclease
    137.
    发明授权
    Restriction endonuclease 失效
    限制性内切核酸酶

    公开(公告)号:US5726052A

    公开(公告)日:1998-03-10

    申请号:US507615

    申请日:1995-07-26

    CPC分类号: C12N9/22 Y10S435/886

    摘要: A restriction endonuclease which recognizes the nucleotide sequence of the following Chemical formula 1 in double stranded DNA and strictly cleaves the nucleotide sequence at the sites marked by arrows. ##STR1## The endonuclease may be made cultivating a strain of the genus Streptomyces such as Streptomyces sp. YH 8647 (FERM BP-5022) capable of producing it.

    摘要翻译: 在双链DNA中识别下列化学式1的核苷酸序列的限制性内切核酸酶,并在箭头标记的位点严格切割核苷酸序列。 化学式1可以使内切核酸酶培养链霉菌属(Streptomyces)属的链霉菌属(Streptomyces sp。)的菌株。 YH 8647(FERM BP-5022)能够生产。

    Process for systhesizing cyclic peptides
    140.
    发明授权
    Process for systhesizing cyclic peptides 失效
    环肽杂交的方法

    公开(公告)号:US5633346A

    公开(公告)日:1997-05-27

    申请号:US450539

    申请日:1995-05-25

    CPC分类号: C07K11/02 A61K38/00

    摘要: A process is provided for the total synthesis of a cyclic peptide, which is useful as antifungal drug, and novel compounds prepared by the synthesis method. The cyclic peptide is represented by the following formula (I): ##STR1## wherein X1, X2, X4 and X7 are independently N-methyl-.alpha.-amino acid or .alpha.-hydroxy acid,provided that at least one of X1, X2, X4 and X7 is an .alpha.-hydroxy acid;X3, X6 and X8 are independently .alpha.-amino acid;X5 is a cyclic amino acid;X9 is an N-methyl-.alpha.-amino acid or .alpha.-hydroxy acid substituted by a hydroxy group;and the dotted lines represent intramolecular hydrogen bonds.The process includes cyclizing a corresponding linear peptide between X5 and X6 via a peptide bond.

    摘要翻译: 提供了可用作抗真菌药物的环肽的全合成方法和通过合成方法制备的新化合物。 环肽由下式(I)表示:其中X 1,X 2,X 4和X 7独立地是N-甲基-α-氨基酸或α-羟基酸,条件是X1中的至少一个 ,X2,X4和X7是α-羟基酸; X3,X6和X8独立地是α-氨基酸; X5是环状氨基酸; X 9是被羟基取代的N-甲基-α-氨基酸或α-羟基酸; 虚线表示分子内氢键。 该方法包括通过肽键在X5和X6之间环化相应的线性肽。