申请人:BANYU PHARMACEUTICAL CO., LTD.
公开号:EP0436189A1
公开(公告)日:1991-07-10
1. A cyclic pentapeptide of the formula: wherein Xn (n = 1-5) represent amino acid residues, respectively, and X¹ is DPhe, DTyr, DTha, DTza, DNal, DBta, DTrp, DTrp(O), DTrp(CHO) or DTrp((CH₂)mCOR¹) (wherein m is from 0 to 6, and R¹ is a hydroxyl group, a C₁-C₆ alkoxy group, an amino group or a C₁-C₆ monoalkylamino group, provided that when m = 0, R¹ is not a hydroxyl group), X² is DAsp, DGlu or DCys(O₃H), X³ is Pro, Hyp, Pip, Thz, βAla, or Gly, Ala, αAba, Aib, Val, Nva, Leu, Ile, aIle, Nle, Met, Met(O), Met(O₂), Phe, Tza, Tha, Tyr, Trp, His, Arg, Lys, Lys(CHO), Orn, Orn(CHO), Asn, Gln, Asp, Glu, Cys(O₃H), Cys, Ser or Thr wherein a hydrogen atom on the α-amino group may be substituted by a C₁-C₆ alkyl or C₃-C₇ cycloalkyl group which may have an optional group selected from the group consisting of an imidazolyl group, a carboxyl group, a sulfo group and a hydroxyl group, X⁴ is DAla, DThr, DαAba, DVal, DNva, DLeu, DIle, DaIle, DNle, DtertLeu, DCpg, DChg, DDpg, DPen, Aib, Ac₃c, Ac₄c, Ac₅c, Ac₆c, Ac₇c, or DPhg, DThg, DFug, DTzg or DItg wherein a hydrogen atom at the α-position may be substituted by a C₁-C₃ alkyl group, X⁵ is Pro, Pip, Thz, or His, Ala, αAba, Val, Nva, Leu, Ile, aIle, Nle, Met, C₃al, C₄al, C₅al or C₆al wherein a hydrogen atom on the α-amino group may be substituted by a C₁-C₆ alkyl group; or a pharmaceutically acceptable salt thereof.
1.式中的环状五肽:其中 Xn(n = 1-5)分别代表氨基酸残基,而 X¹ 是 DPhe、DTyr、DTha、DTza、DNal、DBta、DTrp、DTrp(O)DTrp(CHO)或 DTrp((CH₂)mCOR¹)(其中 m 为 0 至 6,R¹ 为羟基、C₁-C₆ 烷氧基、氨基或 C₁-C₆ 单烷基氨基)、但当 m = 0 时,R¹ 不是羟基),X² 是 DAsp、DGlu 或 DCys(O₃H),X³ 是 Pro、Hyp、Pip、Thz、βAla 或 Gly、Ala、αAba、Aib、Val、Nva、Leu、Ile、aIle、Nle、Met、Met(O)、Met(O₂)、Phe、Tza、Tha、Tyr、Trp、His、Arg、Lys、Lys(CHO)、Orn、Orn(CHO)、Asn、Gln、Asp、Glu、Cys(O₃H)、Cys、Ser或Thr,其中α-氨基上的氢原子可被C₁-C₆烷基或C₃-C₇环烷基取代,环烷基上可有一个任选的基团,该基团选自由咪唑基组成的组、X⁴是DAla、DThr、DαAba、DVal、DNva、DLeu、DIle、DaIle、DNle、DtertLeu、DCpg、DChg、DDpg、DPen、Aib、Ac₃c、Ac₄c、Ac₅c、Ac₆c、Ac₇c 或 DPhg、DThg、DFug、DTzg 或 DItg,其中 α 位的氢原子可被 C₁-C₃ 烷基取代,X⁵ 是 Pro、Pip、Thz或His、Ala、αAba、Val、Nva、Leu、Ile、aIle、Nle、Met、C₃al、C₄al、C₅al或C₆al,其中α-氨基上的氢原子可被C₁-C₆烷基取代;或其药学上可接受的盐。