Pipecolic acid containing cyclopeptolides, their preparation and pharmaceutical compositions containing them
申请人:SANDOZ AG
公开号:EP0360760A2
公开(公告)日:1990-03-28
Pipecolic acid-containing peptolides wherein the peptidic backbone is of at least 9 a-amino acid residues joined together by peptide bonds, particularly the compounds of formula I
wherein the substituents have various significances, are disclosed.
They can be prepared by isolation or derivation from an appropriate microorganism strain such as S 42508/F (NRRL 15761).
They have interesting pharmacological, e.g. antifungal, chemotherapeutic drug resistance reversing and to some extent immunosuppressant and antiinflammatory properties.
含联哌羧酸的多肽,其中肽骨架由至少 9 个通过肽键连接在一起的 a-氨基酸残基组成,特别是式 I 的化合物
其中的取代基具有各种意义。
它们可以通过从适当的微生物菌株(如 S 42508/F(NRRL 15761))中分离或衍生制备。
它们具有有趣的药理特性,例如抗真菌、逆转化疗药物耐药性,以及在一定程度上的免疫抑制和抗炎特性。
Synthesis and Bioactivity of Analogs of Maculosin, a Host-Specific Phytotoxin Produced by <i>Alternaria </i><i>alternata</i> on Spotted Knapweed (<i>Centaurea </i><i>maculosa</i>)
作者:Mikhail M. Bobylev、Ludmila I. Bobyleva、Gary A. Strobel
DOI:10.1021/jf960091c
日期:1996.1.1
Maculosin (cyclo-Pro-Tyr), a host-specific phytotoxin produced by Alternaria alternata on spotted knapweed (Centaurea maculosa), is an ideal prototype for creating a safe and an environmentally friendly antiknapweed herbicide. To evaluate this possibility, a series of 18 maculosin analogs was synthesized and tested in the greenhouse on whole knapweed plants by spray or brush application. Interestingly, many of the maculosin analogs have significant potential as natural herbicides against spotted knapweed. Even the simplest analog, cyclo-Pro-Phe, destroys two thirds of the spotted knapweed foliage at a concentration of 6 x 10(-2) mol/L within 15 days. Structure-activity relationships are discussed.
Synthesis and antitumor activity of the 6-p-alkoxyphenyl derivatives of hexahydropyrimidine-2,4-diones
作者:L. V. Azaryan、S. A. Avetisyan、N. S. Buyukyan、A. A. Chachoyan、B. T. Garibdzhanyan
DOI:10.1007/bf02464114
日期:1997.6
Antagonists of the antidiuretic and/or vasopressor action of arginine vasopressin