pentalongin | 106261-83-0

• 分子结构分类: 有机化合物 - 苯丙烷和聚酮 - 异色满醌
• 英文名称: pentalongin
• 英文别名: 1H-naphtho[2,3-c]pyran-5,10-dione；1H-benzo[g]isochromene-5,10-dione
• CAS: 106261-83-0
• 化学式: C₁₃H₈O₃
• 分子量: 212.205
• InChiKey: ODADCRFMCATOSN-UHFFFAOYSA-N

物化性质

• 熔点：
  162 °C
• 沸点：
  406.6±45.0 °C(Predicted)
• 密度：
  1.37±0.1 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  1.5
• 重原子数：
  16
• 可旋转键数：
  0
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.08
• 拓扑面积：
  43.4
• 氢给体数：
  0
• 氢受体数：
  3

反应信息

• 作为反应物：
  描述：

  pentalongin 在 sodium dithionite 、 三氟化硼乙醚 、 sodium carbonate 作用下， 以 甲醇 、 二氯甲烷 、 水 、 乙酸乙酯 为溶剂， 反应 12.0h， 生成 5,10-dihydroxy-2H-naphtho[2,3-c]pyran-5,10-β-bisglucopyranoside
  参考文献：
  名称：

  Synthesis of Harounoside, A Naturally Occurring Pentalongin Hydroquinone Bisglucoside

  摘要：

  最近分离的天然产物哈罗诺苷，即5,10-二羟基-2H-萘并[2,3-c]吡喃-β-d-双葡萄糖苷，首次方便地从五长苷合成，产率为84%，共三步。

  DOI：

  10.1055/s-2006-950437
• 作为产物：
  描述：

  methyl (3-allyl-1,4-dimethoxynaphthalene-2-yl)carboxylate 在 sodium periodate 、 四氧化锇 、 lithium aluminium tetrahydride 、 ammonium cerium(IV) nitrate 、 对甲苯磺酸 作用下， 以 1,4-二氧六环 、 乙醚 、 水 、 乙腈 、 苯 为溶剂， 反应 89.0h， 生成 pentalongin
  参考文献：
  名称：

  Total Synthesis of Two Naphthoquinone Antibiotics, Psychorubrin and Pentalongin, and Their C(1)-Substituted Alkyl and Aryl Derivatives

  摘要：

  The synthesis of 1-alkyl- and 1-aryl-1H-naphtho[2,3-c]pyran-5,10-dione bearing a C(3)-C(4) double bond, was performed by two alternative cyclization strategies of 2,3-disubstituted 1,4-naphthoquinones. Lemieux-Johnson oxidation of 2-allyl-3-hydroxymethyl-1,4-dimethoxynaphthalenes and subsequent oxidative demethylation of the intermediate 3,4-dihydro-5,10-dimethoxy-1H-naphtho[2,3 -c]pyran-3-oles to the corresponding 3,4-dihydro-3-hydroxy-1H-naphtho[2,3-c]pyran-5, 10-diones gave, after acid-catalyzed dehydration, the de shed 1H-naphtho[2,3-c]pyran-5,10-diones. Alternatively, the pyranonaphthoquinone ring system was constructed by intramolecular acid-catalyzed condensation of(3-hydroxymethyl-1,4-naphthoquinone-2-yl)acetaldehyde acetals. Using this synthetic approach, the synthesis of two naturally occurring naphthoquinone antibiotics, pentalongin and psychorubrin, is reported.

  DOI：

  10.1021/jo9811975

文献信息

• Antitumor agents. 89. Psychorubrin, a new cytotoxic naphthoquinone from Psychotria rubra and its structure-activity relationships
  作者：Toshimitsu Hayashi、Forrest T. Smith、Kuo Hsiung Lee

  DOI：10.1021/jm00394a013

  日期：1987.11

  A new naphthoquinone, isolated from the alcoholic extract of Psychotria rubra, exhibited significant cytotoxicity in the KB cell assay (ED50 = 3.0 micrograms/mL). Spectral data was used to assign the structure of psychorubrin as 2. Naphthoquinone derivatives 6, 8, 13, and 14 were prepared and exhibited superior cytotoxic activity to that of psychorubrin. All were potential Michael acceptors whose conjugation

  从Psychotria rubra的酒精提取物中分离出的新萘醌在KB细胞测定中表现出显着的细胞毒性（ED50 = 3.0微克/ mL）。光谱数据被用于将精神尿蛋白的结构指定为2。制备了萘醌衍生物6、8、13和14，并表现出比精神尿蛋白更好的细胞毒活性。所有这些都是潜在的迈克尔受体，其结合已扩展。然而，当此类化合物中存在亲水性羟基时，观察到体外活性降低。
• An efficient method for the one-pot construction of the 1H-naphtho[2,3-c]pyran-5,10-dione system
  作者：Kazuhiro Kobayashi、Masaharu Uchida、Tomokazu Uneda、Keiichi Yoneda、Miyuki Tanmatsu、Osamu Morikawa、Hisatoshi Konishi

  DOI：10.1039/b106933k

  日期：2001.11.15

  2-(1-Hydroxyalkyl)-1,4-naphthoquinones are found to react with pyrrolidino enamines in toluene to give 1H-naphtho[2,3-c]pyran-5,10-diones in good yields via a tandem conjugate addition–cyclization sequence, followed by an elimination of pyrrolidine. 2-Hydroxymethyl-1,4-naphthoquinone and morpholino enamines undergo a similar sequence, without loss of morpholine, to yield 3-morpholino-3,4-dihydro-1H-naphtho[2,3-c]pyran-5,10-diones. The 3-morpholino group of these products can be replaced with a hydro, a hydroxy, or a methoxy group. Imines also react with 2-(1-hydroxyalkyl)-1,4-naphthoquinones to give the corresponding 1H-naphtho[2,3-c]pyran-5,10-diones, including a natural product (pentalongin). The utility of these reactions is demonstrated in the synthesis of pyranonaphthoquinone antibiotics, viz. (±)-eleutherin and (±)-isoeleutherin.

  2-(1-羟基烷基)-1,4-萘醌与吡咯烯胺在甲苯中反应，通过串联的共轭加成-环化序列，高产率地生成1H-萼[2,3-c]吡喃-5,10-二酮，随后排除吡咯啉。2-羟基甲基-1,4-萘醌与吗啉烯胺经历类似的反应序列，且不损失吗啉，生成3-吗啉基-3,4-二氢-1H-萼[2,3-c]吡喃-5,10-二酮。这些产物的3-吗啉基可以被羟基、氢或甲氧基取代。亚胺也与2-(1-羟基烷基)-1,4-萘醌反应，生成对应的1H-萼[2,3-c]吡喃-5,10-二酮，包括一种天然产物（pentlongin）。这些反应的实用性在于合成了吡喃萘醌抗生素，如(±)-eleutherin和(±)-isoeleutherin。
• Synthesis of Pyranonaphthoquinone Antibiotics Involving the Phthalide Annulation Strategy
  作者：Norbert De Kimpe、Sven Claessens、Dashnie Naidoo、Dulcie Mulholland、Luc Verschaeve、Johannes van Staden

  DOI：10.1055/s-2006-926248

  日期：——

  The synthesis of the pyranonaphthoquinone antibiotic pentalongin was performed using the phthalide annulation strategy. Annulation of the cyanophthalide onto 6H-pyran-3-one resulted in a hongconin analogue, which upon further elaboration was converted into the natural product. © Georg Thieme Verlag Stuttgart.

  使用苯酞环化策略进行吡喃萘醌类抗生素五肽的合成。将氰基酞环化到 6H-pyran-3-one 上产生了 hongconin 类似物，经过进一步的加工，它被转化为天然产物。© Georg Thieme Verlag 斯图加特。
• NEW COMBINATION SOLUTION FOR TREATING CHEMOTHERAPY REFRACTORY CANCER
  申请人：1Globe Biomedical Co., Ltd.

  公开号：EP3865130A1

  公开（公告）日：2021-08-18

  The use of a pharmaceutical composition in treating cancer in a subject comprising a therapeutically effective amount of a compound of formula (I), a therapeutically effective amount of paclitaxel and a low dose of gemcitabine, and a kit included above composition thereof.

  一种药物组合物在治疗受试者癌症中的用途，该组合物包含治疗有效量的式（I）化合物、治疗有效量的紫杉醇和低剂量的吉西他滨，以及包含上述组合物的试剂盒。
• One-pot preparation of 1H-naphtho[2,3-c]pyran-5,10-diones and its application to concise total synthesis of (±)-eleutherin and (±)-isoeleutherin
  作者：Kazuhiro Kobayashi、Masaharu Uchida、Tomokazu Uneda、Miyuki Tanmatsu、Osamu Morikawa、Hisatoshi Konishi

  DOI：10.1016/s0040-4039(98)01683-9

  日期：1998.10

  1H-Naphtho[2,3-c]pyran-5,10-dione derivatives, including a natural product (pentalongin), were generally synthesized in one-pot using a tandem conjugate addition-cyclization sequence between 2-(1-hydroxyalkyl)-1,4-naphthoquinones and enamines (or imines). The utility of this method was demonstrated in the synthesis of pyranonaphthoquinone antibiotics, (+/-)-eleutherin and (+/-)-isoeleutherin. (C) 1998 Elsevier Science Ltd. All rights reserved.