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cyclostreptin | 432551-71-8

中文名称
——
中文别名
——
英文名称
cyclostreptin
英文别名
(-)-FR182877;(1S,2R,4R,7R,8R,9R,10S,11R,12R,13S,17S,18R)-8,10-dihydroxy-1,5,9,18-tetramethyl-16,20-dioxahexacyclo[15.3.2.02,13.04,12.07,11.014,19]docosa-5,14(19)-dien-15-one
cyclostreptin化学式
CAS
432551-71-8
化学式
C24H32O5
mdl
——
分子量
400.515
InChiKey
WMRQHSFWMFGIFW-OSGMBHRDSA-N
BEILSTEIN
——
EINECS
——
  • 物化性质
  • 计算性质
  • ADMET
  • 安全信息
  • SDS
  • 制备方法与用途
  • 上下游信息
  • 反应信息
  • 文献信息
  • 表征谱图
  • 同类化合物
  • 相关功能分类
  • 相关结构分类

计算性质

  • 辛醇/水分配系数(LogP):
    2.2
  • 重原子数:
    29
  • 可旋转键数:
    0
  • 环数:
    6.0
  • sp3杂化的碳原子比例:
    0.79
  • 拓扑面积:
    76
  • 氢给体数:
    2
  • 氢受体数:
    5

反应信息

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文献信息

  • Tanaka, Natsumi; Suzuki, Takahiro; Matsumura, Takehiko, Angewandte Chemie - International Edition, 2009, vol. 48, p. 2580 - 2583
    作者:Tanaka, Natsumi、Suzuki, Takahiro、Matsumura, Takehiko、Hosoya, Yosuke、Nakada, Masahisa
    DOI:——
    日期:——
  • Interaction of a Cyclostreptin Analogue with the Microtubule Taxoid Site: The Covalent Reaction Rapidly Follows Binding
    作者:Ruoli Bai、Christopher D. Vanderwal、J. Fernando Díaz、Ernest Hamel
    DOI:10.1021/np800056m
    日期:2008.3.1
    The natural product cyclostreptin reacts covalently and stoichiometrically with microtubules, at either of two amino acid residues of beta-tubulin, Thr-218 or Asn-226, but much less extensively and only at Thr-218 in unpolymerized tubulin. It was found that 8-acetylcyclostreptin (8AcCS) induces tubulin assembly in a manner almost identical with that of cyclostreptin. We therefore synthesized [C-14-acetyl]8AcCS and studied the kinetics of its interaction with glutaraldehyde-stabilized microtubules and with unassembled tubulin. With the microtubules, we found that 8AcCS bound rapidly, with a minimal (unmeasurable with the radiolabeled analogue) lag prior to the occurrence of the covalent reaction. Apparent reaction rate constants for the overall reaction ranged from 6.2 x 10(2) M-1 s(-1) at 0 degrees C to 5.6 x 10(3) M-1 s(-1) at 20 degrees C. The rate constants obtained at 0 and 10 degrees C indicate an activation energy for the reaction of about 27 kcal/mol, while those obtained at 10 and 20 degrees C indicate an activation energy of about 7.7 kcal/mol. With the unpolymerized tubulin, we did find a minimal covalent reaction occurred without apparent microtubule assembly, but a substantial reaction only occurred following assembly. In conclusion, the radiolabeled 8AcCS shows that an extensive covalent interaction of ligand with tubulin requires microtubule assembly and that the covalent reaction occurs rapidly after the initial binding interaction.
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