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4'',5-bisavermectin B1a | 81924-42-7

中文名称
——
中文别名
——
英文名称
4'',5-bisavermectin B1a
英文别名
4'',5-di-O-tert-butyldimethylsilyl-22,23-dihydroavermectin B1;avermectin B1a 4'',5-bis(tert-butyldimethylsilyl) ether;4'',5-bis-O-(tert-butyldimethylsilyl)avermectin B1a;5,4''-bis-O-(tert-butyldimethylsilyl)avermectin B1a;4'',5-bis-O-(tert-butyldimethylsilyl)avermectin B1;(1'R,2R,3S,4'S,6S,8'R,10'E,12'S,13'S,14'E,16'E,20'R,21'R,24'S)-2-[(2S)-butan-2-yl]-21'-[tert-butyl(dimethyl)silyl]oxy-12'-[(2R,4S,5S,6S)-5-[(2S,4S,5S,6S)-5-[tert-butyl(dimethyl)silyl]oxy-4-methoxy-6-methyloxan-2-yl]oxy-4-methoxy-6-methyloxan-2-yl]oxy-24'-hydroxy-3,11',13',22'-tetramethylspiro[2,3-dihydropyran-6,6'-3,7,19-trioxatetracyclo[15.6.1.14,8.020,24]pentacosa-10,14,16,22-tetraene]-2'-one
4'',5-bis<O-(dimethyl-tert-butylsilyl)>avermectin B<sub>1a</sub>化学式
CAS
81924-42-7
化学式
C60H100O14Si2
mdl
——
分子量
1101.62
InChiKey
DEQDHRIBEMNOJS-ZNCHDJKXSA-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

物化性质

  • 沸点:
    952.3±65.0 °C(Predicted)
  • 密度:
    1.12±0.1 g/cm3(Predicted)

计算性质

  • 辛醇/水分配系数(LogP):
    11.44
  • 重原子数:
    76
  • 可旋转键数:
    14
  • 环数:
    7.0
  • sp3杂化的碳原子比例:
    0.82
  • 拓扑面积:
    148
  • 氢给体数:
    1
  • 氢受体数:
    14

上下游信息

  • 上游原料
    中文名称 英文名称 CAS号 化学式 分子量
  • 下游产品
    中文名称 英文名称 CAS号 化学式 分子量

反应信息

点击查看最新优质反应信息

文献信息

  • Avermectin acyl derivatives with anthelmintic activity
    作者:Helmut Mrozik、Philip Eskola、Michael H. Fisher、John R. Egerton、Sam Cifelli、Dan A. Ostlind
    DOI:10.1021/jm00348a010
    日期:1982.6
    Avermectins A2a, B1a, and B2a (1, 2, and 3) were acetylated to give 4"- and 23-acetates 4 and 5 and 4",23-diacetate 6 from 1, the 4"-and 5-acetates 7 and 8 and 4",5-diacetate 9 from 2, and triacetate 10 from 3. Structure proof by 300-MHz 1H NMR and mass spectral fragmentation is discussed for 10. Forcing acetylation conditions generated from both 1 and 3 the identical aromatic diacetate 11. Good anthelmintic
    阿维菌素A2a,B1a和B2a(1、2和3)被乙酰化,从1、4”和5-乙酸酯7和4得到4”-和23-乙酸酯4和5和4”,23-二乙酸酯6。讨论了10的8和4“,5-二乙酸9和3的三乙酸10。讨论了10的300-MHz 1H NMR结构验证和质谱碎裂。强制从1和3产生的乙酰化条件是相同的芳族二乙酸11。在沙土鼠和绵羊中对4“-乙酰化衍生物4(尤其是7)的良好驱虫活性促使制备另外的4”-酰化的2衍生物,其具有新戊酰基,正辛酰基,琥珀酰基,氨基甲酰基,二甲基氨基甲酰基和N-乙酰基甘氨酰基取代基5-O-叔丁基二甲基甲硅烷基保护的中间体12。其他关键中间体是三氯乙氧基琥珀酰衍生物18和4-硝基苯基碳酸酯21。在沙鼠中,对沙丁酸纤毛虫的驱虫活性可与天然产物2媲美,其极性更强的取代衍生物20、23和27显示。5-的取代羟基或其由于芳构化而损失导致驱虫药能力大大降低。
  • Radical-Induced Oxidation of Oxahydrindene (Hexahydrobenzofuran) Portion of 22,23-Dihydroavermectin B1a: Identification of Autooxidation Products
    作者:John D. Stong、James V. Pivnichny、Helmut Mrozik、Frank S. Waksmunski
    DOI:10.1002/jps.2600811008
    日期:1992.10
    Three products resulting from free-radical-induced oxidation of the oxahydrindene portion of 22,23-dihydroavermectin B1a (H2B1a) are 5-oxo-H2B1a, 8a-oxo-H2B1a, and 5,8a-bisoxo-H2B1a. The last of these compounds has not been reported previously.
    自由基诱导的22,23-二氢阿维菌素B1a(H2B1a)的氧杂茚部分的氧化产生的三种产物是5-oxo-H2B1a,8a-oxo-H2B1a和5,8a-bisoxo-H2B1a。这些化合物中的最后一种以前没有被报道过。
  • A Novel Synthesis of Avermectin B1a from Avermectin B2a
    作者:Tadashi Katoh、Etsuko Itoh、Shiro Terashima
    DOI:10.3987/com-99-s107
    日期:——
    The title synthesis was achieved via a four-step sequence of reactions including selective silylation of the C4 "- and the C5-hydroxy groups, mesylation of the remaining C23-hydroxy group, tetra-n-butylammonium oxalate-induced elimination, and deprotection of the silyl protecting groups.
  • An improved preparation of the avermectin disaccharide unit
    作者:Timothy A. Blizzard、Gaye Marino、Helmut Mrozik、Michael H. Fisher
    DOI:10.1021/jo00268a050
    日期:1989.3
  • Total Synthesis of the Antiparasitic Agent Avermectin B1a
    作者:James D. White、Gary L. Bolton、Anura P. Dantanarayana、Christina M. J. Fox、Roger N. Hiner、Randy W. Jackson、Kazuhiko Sakuma、Ulhas S. Warrier
    DOI:10.1021/ja00112a006
    日期:1995.2
    The synthesis of avermectin B-1a has been completed by a route that assembles the aglycon from three subunits consisting of the hexahydrobenzofuran moiety (A), the spiroketal segment (B), and the acyclic portion (C) comprising C9-C15. Connection is made in a B + C --> (B - C) + A sequence, and the synthesis is concluded by attachment to the aglycon of the L-oleandrosyl-L-oleandrose disaccharide via the pyridylthio glycoside.
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