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决明内酯 | 41743-74-2

中文名称
决明内酯
中文别名
——
英文名称
Toralactone
英文别名
torolactone;9,10-dihydroxy-7-methoxy-3-methylbenzo[g]isochromen-1-one
决明内酯化学式
CAS
41743-74-2
化学式
C15H12O5
mdl
——
分子量
272.257
InChiKey
WEHXAEGTVPWKDY-UHFFFAOYSA-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

  • 熔点:
    250-252 °C
  • 沸点:
    480.2±45.0 °C(Predicted)
  • 密度:
    1.432±0.06 g/cm3(Predicted)
  • 物理描述:
    Solid

计算性质

  • 辛醇/水分配系数(LogP):
    3.3
  • 重原子数:
    20
  • 可旋转键数:
    1
  • 环数:
    3.0
  • sp3杂化的碳原子比例:
    0.13
  • 拓扑面积:
    76
  • 氢给体数:
    2
  • 氢受体数:
    5

安全信息

  • 海关编码:
    2932999099

SDS

SDS:31df84dfe02c9a88608cf5e369419a3c
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制备方法与用途

概述

决明子为豆科植物决明(Cassia obtusifolia L.)的干燥成熟种子。它具有祛风散热、清肝明目和润肠通便的功效,且有研究显示能降低血清胆固醇水平。研究表明,决明子中含有多种蒽醌类成分及萘并吡喃酮类化合物,并报道其中某些蒽醌苷和萘并吡喃酮苷能够对抗四氯化碳和半乳糖胺对原代培养小鼠肝细胞的毒害作用。此外,决明内酯(toralactone)是一种黄色颜料,关于此类化合物的药用价值也有所报道。

应用

决明子中的多种蒽醌类成分及萘并吡喃酮类化合物中,某些蒽醌苷和萘并吡喃酮苷能够对抗四氯化碳和半乳糖胺对原代培养小鼠肝细胞的毒害作用。决明内酯(toralactone)是一种黄色颜料,并有关于此类化合物药用价值的报道。

制备

决明内酯的制备如下:

  1. 取决明子(Cassia obtusifolia和Cassia tora的种子,产自中国安徽省),1千克,粉碎成粗粉。使用10升乙醇进行加热回流提取后,减压回收溶剂,获得浸膏A(210克)。弃去药渣。
  2. 取得上述浸膏A(210克),用1000克多孔树脂D101、D201和D061(天津农药厂生产)等量混合的多孔树脂吸附。首先使用10升水洗涤,再用5升乙醇洗脱。收集洗脱液后减压回收溶剂,获得浸膏B(10克)。
  3. 取得上述浸膏B(10克),用1000克硅胶H进行柱层析,使用氯仿作为洗脱剂分段收集,并通过TLC检测合并相同组分。回收溶剂后,再用甲醇重结晶,分别得到化合物(1)(0.02g)、化合物(2)(2.42g)、化合物(3)(1.05g)、化合物(4)(0.5g)以及化合物(5)(0.32g),为黄色针状结晶,熔点为187~189℃(甲醇)。
生物活性

toralactone 可从Cassia obtusifolia 中分离得到,并通过Nrf2依赖的抗氧化机制介导肝保护作用。

体外研究

toralactone 能够使耐药性MCF-7 (adr) 细胞线对紫杉醇产生敏感性,主要是通过抑制P-糖蛋白外排活性实现的。

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

  • 作为反应物:
    描述:
    决明内酯二异丁基氢化铝 作用下, 以 四氢呋喃正己烷 为溶剂, 反应 0.5h, 生成 7-methoxy-3-methyl-1H-benzo[g]isochromene-1,9,10-triol
    参考文献:
    名称:
    Synthesis of Anhydronectriachrysone, an Extensively Conjugated γ-Pyrone
    摘要:
    The synthesis of anhydronectriachrysone (2) through the DIBAH reduction of toralactone (3), followed by dehydration of the corresponding lactol (4) is reported (38% yield).
    DOI:
    10.1080/00397919308011241
  • 作为产物:
    描述:
    Toralactone 9-O-beta-D-gentiobioside 在 β-glucosidase 作用下, 以 为溶剂, 反应 20.0h, 生成 决明内酯
    参考文献:
    名称:
    Kitanaka, Susumu; Takido, Michio, Chemical and pharmaceutical bulletin, 1988, vol. 36, # 10, p. 3980 - 3984
    摘要:
    DOI:
  • 作为试剂:
    参考文献:
    名称:
    Total Synthesis of the Antiallergic Naphtho-α-pyrone Tetraglucoside, Cassiaside C2, Isolated from Cassia Seeds
    摘要:
    Toralactone 9-O-beta-D-glucopyranosyl-(1-->6)-beta-D-glucopyranosyl-(1-->3)-beta-D-glucopyranosyl-(1-->6)-beta-D-glucopyranoside (1, cassiaside C-2) isolated from Cassia obtusifolia L. and showing strong antiallergic activity, was concisely synthesized employing glycosyl trifluoroacetimidates as glycosylation agents. The unique naphtho-alpha-pyrone structure of toralactone (5) was constructed by condensation of orsellinate 8 with pyrone 9 in the presence of LDA as developed by Staunton and co-workers. The naphthol of toralactone showed minimal reactivity as an acceptor and was screened with various glycosyl donors. It is finally concluded that sacrifice of an excess amount of the trifluoroacetimidate or trichloroacetimidate donors (6f/6g, 6.0 equiv) in the presence of a catalytic amount of TMSOTf (0.05 and 0.3 equiv, respectively) afforded excellent yields of the coupling product, which was otherwise only a minor product under a variety of conditions examined.
    DOI:
    10.1021/jo034223u
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文献信息

  • Four new glycosides from the seeds of Cassia obtusifolia
    作者:Liying Tang、Hongwei Wu、Huijuan Su、Xidan Zhou、Guohong Zhou、Ting Wang、Zhenzhen Kou、Zhuju Wang
    DOI:10.1016/j.phytol.2015.05.005
    日期:2015.9
    Four new glycosides, including one anthraquinone glycoside (1), one naphthalene glycoside (2), and two naphthopyrone glycosides (3–4), with 10 known compounds (5–14) were isolated from the seeds of Cassia obtusifolia L. The new structures were determined by spectroscopic analysis and chemical transformations.
    四个新甙,包括一个蒽醌苷(1),一个萘苷(2),和两个naphthopyrone甙(3 - 4),用10种已知的化合物(5 - 14)从种子分离草决明L.新通过光谱分析和化学转化确定结构。
  • Studies on the constituents of the seeds of Cassia obtusifolia: The structures of two new lactones, isotoralactone and cassialactone
    作者:Susumu Kitanaka、Michio Takido
    DOI:10.1016/0031-9422(81)84042-3
    日期:1981.1
    Abstract Torosachrysone and two new naphthalenic lactones, isotoralactone and cassialactone, were isolated from the seeds of Cassia obtusifolia. Their structures were established as 9,10-dihydroxy-7-methoxy-3-methylene-1H-naphtho(2,3-c)dihydropyrone-1-one and 8-methoxy-4-methyl-1-oxo-4,10,11-trihydroxy-naphtho(2,3-c)oxepin, respectively.
    摘要 从钝叶决明子(Cassia obtusifolia) 的种子中分离得到牛角草酮和两种新的萘内酯异戊内酯和肉桂内酯。它们的结构被确定为 9,10-dihydroxy-7-methoxy-3-methylene-1H-naphtho(2,3-c)dihydropyrone-1-one 和 8-methoxy-4-methyl-1-oxo-4,10 ,11-三羟基-萘并(2,3-c)oxepin,分别。
  • A Simple Synthesis of 4-Deoxyanhydrofusarubin Lactone
    作者:Michel Barbier、Michel Devys、Denise Parisot
    DOI:10.1080/00397919308009823
    日期:1993.3.1
    Abstract The total synthesis of 4-deoxyanhydrofusarubin lactone was carried out through the controlled m-chloroperbenzoic acid oxidation of toralactone (yield 81%).
    摘要 采用间氯过苯甲酸可控氧化托拉内酯,全合成4-脱氧脱水镰刀菌红素内酯(产率81%)。
  • Estrogenic and Anti-estrogenic Activities of Cassia tora Phenolic Constituents
    作者:Ali Mahmoud El-Halawany、Mi Hwa Chung、Norio Nakamura、Chao-Mei Ma、Tsutomu Nishihara、Masao Hattori
    DOI:10.1248/cpb.55.1476
    日期:——
    Through an estrogenic activity bioassay-guided fractionation of the 70% ethanolic extract of Cassia tora seeds two new phenolic triglucosides, torachrysone 8-O-[β-D-glucopyranosyl(1→3)-O-β-D-glucopyranosyl(1→6)-O-β-D-glucopyranoside] (1) and toralactone 9-O-[β-D-glucopyranosyl-(1→3)-O-β-D-glucopyranosyl-(1→6)-O-β-D-glucopyranoside] (2), along with seven known compounds were isolated. The structures of the new compounds were elucidated on the basis of spectroscopic and chemical evidence. The estrogenic activity of the fractions and the isolated compounds were investigated using the estrogen-dependent proliferation of MCF-7 cells. In addition, the yeast two hybrid assay expressing estrogen receptor α (ERα) and β (ERβ) and the ERα competitor screening assay (ligand binding screen) were used to verify the binding affinities of the isolated compounds to ER. Furthermore, a naringinase pre-treatment of the 70% alcoholic extract of Cassia tora seeds resulted in a significant increase in its estrogenic activity. From the naringinase pre-treated extract six compounds were isolated, among which 6-hydroxymusizin and aurantio-obtusin showed the most potent estrogenic activity, while torachrysone, rubrofusarin and toralactone showed a significant anti-estrogenic activity. Finally, the structure requirements responsible for the estrogenic activity of the isolated compounds were studied by investigating the activity of several synthetic compounds and chemically modifying the isolated compounds. The basic nucleus 1,3,8-trihyroxynaphthalene (T3HN) was found to play a principal role in the binding affinity of these compounds to ER.
    通过对决明子 70%乙醇提取物进行雌激素活性生物测定引导分馏,获得了两种新的酚类三葡糖苷,即 torachrysone 8-O-[β-D-glucopyranosyl(1→3)-O-β-D-glucopyranosyl(1→6)-O-β-D-glucopyranoside] (1) 和 toralactone 9-O-[β-D-glucopyranosyl-(1→3)-O-β-D-glucopyranosyl-(1→6)-O-β-D-glucopyranoside] (2)(1) 和环内酯 9-O-[β-<小>D-吡喃葡萄糖基-(1→3)-O-β-<小>D-吡喃葡萄糖基-(1→6)-O-β-<小>D-吡喃葡萄糖苷]。(2) 和七个已知化合物被分离出来。根据光谱和化学证据,阐明了新化合物的结构。利用 MCF-7 细胞的雌激素依赖性增殖法研究了馏分和分离化合物的雌激素活性。此外,还采用了表达雌激素受体α(ERα)和β(ERβ)的酵母双杂交试验和ERα竞争者筛选试验(配体结合筛选)来验证分离化合物与ER的结合亲和力。此外,决明子 70% 酒精提取物经柚皮苷酶预处理后,其雌激素活性显著提高。从柚皮苷酶预处理提取物中分离出了六种化合物,其中 6-hydroxymusizin 和 aurantio-obtusin 的雌激素活性最强,而 torachrysone、rubrofusarin 和 toralactone 的抗雌激素活性明显。最后,通过研究几种合成化合物的活性和对分离出的化合物进行化学修饰,研究了导致分离出的化合物具有雌激素活性的结构要求。研究发现,1,3,8-三羟基萘(T3HN)基本核对这些化合物与雌激素的结合亲和力起主要作用。
  • Heterologous biosynthesis of elsinochrome A sheds light on the formation of the photosensitive perylenequinone system
    作者:Jinyu Hu、Farzaneh Sarrami、Hang Li、Guozhi Zhang、Keith A. Stubbs、Ernest Lacey、Scott G. Stewart、Amir Karton、Andrew M. Piggott、Yit-Heng Chooi
    DOI:10.1039/c8sc02870b
    日期:——
    opposite helicity to 1. Theoretical calculations supported that 6 and 12 resulted from atropisomerisation upon formation of the 7-membered ring. Using a bottom-up pathway reconstruction approach on a tripartite YFAC system developed in this study, we uncovered that both a berberine bridge enzyme-like oxidase ElcE and a laccase-like multicopper oxidase ElcG are involved in the double coupling of two naphthol
    苝醌是一类芳香族聚酮化合物,其特征是高度共轭的五环核,这赋予它们强大的光诱导生物活性和独特的光物理性质。尽管最近鉴定了苝醌 elsinochrome A ( 1 )、尾孢菌素 ( 4 ) 和竹红菌素 A ( 6 ) 的生物合成基因簇,但关键的生物合成方面仍然难以捉摸。在这里,我们首先在酵母-真菌人工染色体(YFAC)上的构巢曲霉中异源表达来自小麦病原体Parastagonospora nodorum的编码1的完整elc基因簇。这导致了一种新型黄素依赖性单加氧酶 ElcH 的鉴定,该酶负责苝醌中间体与六环二氢苯并( ghi )苝醌的氧化烯醇偶联1 。在没有ElcH的情况下,苝醌中间体通过分子内羟醛反应形成六环环庚( ghi )苝醌系统,产生6和具有与1相反螺旋性的新型竹红菌素12 。理论计算支持6和12是由7元环形成时的阻转异构化产生的。在本研究中开发的三重 YFAC 系统上使用自下而上的途径重建方法,我们发现小檗碱桥酶样氧化酶
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