(R)-δ-nonalactone | 99461-67-3

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 内酯类
• 英文名称: (R)-δ-nonalactone
• 英文别名: (R)-6-Butyltetrahydro-2H-pyran-2-one；(6R)-6-butyloxan-2-one
• CAS: 99461-67-3
• 化学式: C₉H₁₆O₂
• 分子量: 156.225
• InChiKey: PXRBWNLUQYZAAX-MRVPVSSYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.4
• 重原子数：
  11
• 可旋转键数：
  3
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.89
• 拓扑面积：
  26.3
• 氢给体数：
  0
• 氢受体数：
  2

反应信息

• 作为反应物：
  描述：

  (R)-δ-nonalactone 、 甲基锂 生成 2-methyldecane-2,6-diol
  参考文献：
  名称：

  UTAKA, MASANORI;WATABU, HISASHI;TAKEDA, AKIRA, J. ORG. CHEM., 52,(1987) N19, 4363-4368

  摘要：

  DOI：
• 作为产物：
  描述：

  丁基环氧乙烷 在 palladium on activated charcoal 、 Lindlar's catalyst 吡啶 、 喹啉 、 4-二甲氨基吡啶 、 sodium hydroxide 、 正丁基锂 、 三氟化硼乙醚 、 水 、 氢气 、 trimethoxonium tetrafluoroborate 、 sodium hydride 、 对甲苯磺酸 作用下， 以 二氯甲烷 、 乙酸乙酯 、 甲苯 为溶剂， -78.0~25.0 ℃ 、101.33 kPa 条件下， 反应 30.25h， 生成 (R)-δ-nonalactone
  参考文献：
  名称：

  Enzyme assisted synthesis of enantiomerically pure δ-lactones

  摘要：

  Both enantiomeric series of a wide variety of optically pure 6-alkylated delta-lactones - saturated as well as unsaturated - were prepared via an enzyme mediated route. The key reaction step is the nucleophilic ring opening of enantiomerically pure alkyl-oxiranes, accessible via the corresponding beta-hydroxythioethers which can be obtained enantiomerically pure via enzyme catalyzed kinetic resolutions.

  DOI：

  10.1016/s0957-4166(00)80146-9

文献信息

• HIGHLY ENANTIOSELECTIVE REDUCTION OF δ-KETO ACIDS WITH FERMENTING BAKER’S YEAST. A FACILE SYNTHESIS OF OPTICALLY PURE (<i>R</i>)-(+)-5-HEXADECANOLIDE
  作者：Masanori Utaka、Hisashi Watabu、Akira Takeda

  DOI：10.1246/cl.1985.1475

  日期：1985.10.5

  Optically pure (R)-(+)-hexadecanolide, (+)-5-tridecanolide, and (+)-5-nonanolide were prepared from the corresponding δ-keto acids by reduction with fermenting baker’s yeast.

  光学纯的 (R)-(+)-十六烷内酯、(+)-5-十三烷内酯和 (+)-5-壬内酯是通过用发酵面包酵母还原相应的 δ-酮酸制备的。
• Stereoselective synthesis of chiral δ-lactones <i>via</i> an engineered carbonyl reductase
  作者：Tao Wang、Xiao-Yan Zhang、Yu-Cong Zheng、Yun-Peng Bai

  DOI：10.1039/d1cc04542c

  日期：——

  A carbonyl reductase variant, SmCRM5, from Serratia marcescens was obtained through structure-guided directed evolution. The variant showed improved specific activity (U mg−1) towards most of the 16 tested substrates and gave high stereoselectivities of up to 99% in the asymmetric synthesis of 13 γ-/δ-lactones. In particular, SmCRM5 showed a 13.8-fold higher specific activity towards the model substrate

  来自粘质沙雷氏菌的羰基还原酶变体Sm CR M5是通过结构引导的定向进化获得的。该变体对 16 种测试底物中的大多数表现出改善的比活性 (U mg -1 )，并在 13 种 γ-/δ-内酯的不对称合成中提供高达 99% 的高立体选择性。特别是，SmCR M5对模型底物（即5-氧代癸酸）的比活性高出 13.8 倍，并在 99% ee 中产生 ( R )-δ-癸内酯，时空产率 (STY) 为 301 g L -1 d -1. 六种δ-内酯的高收率和高对映体纯度的制备表明这些高附加值化学品的生物催化合成是可行的，为贵金属催化提供了一种具有成本效益的绿色替代品。
• Structure elucidation of glycosidic antibiotics, glykenins, from Basidiomycetes sp. II. Absolute structures of unusual polyhydroxylated C26-fatty acids, aglycones of glykenins.
  作者：Fumiko NISHIDA、Yuji MORI、Naoko ROKKAKU、Sayuri ISOBE、Takeyuki FURUSE、Makoto SUZUKI、Vithaya MEEVOOTISOM、Timothy W. FLEGEL、Yodhathai THEBTARANONTH、Suthum INTARARUANGSORN

  DOI：10.1248/cpb.38.2381

  日期：——

  The structures of three aglycones of glykenins, produced by Basidiomycetes sp., were determined to be (2S, 16R, 17S, 21R)-2, 16, 17, 21-, (2S, 17R, 18S, 22R)-2, 17, 18, 22-, and (2S, 17S, 18S, 22R)-2, 17, 18, 22-tetrahydroxyhexacosanoic acids (3a-c). The absolute configurations of two of the four hydroxy groups in 3a-c were established by chiral synthesis of the degradation products (6a-c and 7a-c). Chemical transformation of 3a-c to 6, 8-dioxabicyclo[3.2.1]octane derivatives (18-c) revealed the relative and absolute configurations of the acyclic 1, 2-diol moieties in 3a-c.

  巴斯德霉菌属（Basidiomycetes sp.）产生的甘草甜素的三种缩醛的结构被确定为（2S, 16R, 17S, 21R）-2, 16, 17, 21-、（2S, 17R, 18S, 22R）-2, 17, 18, 22-和（2S, 17S, 18S, 22R）-2, 17, 18, 22-四羟基六二十酸（3a-c）。通过手性合成降解产物（6a-c 和 7a-c），确定了 3a-c 中四个羟基中两个羟基的绝对构型。将 3a-c 化学转化为 6，8-二氧双环[3.2.1]辛烷衍生物 (18-c) 揭示了 3a-c 中无环状 1，2-二醇分子的相对和绝对构型。
• Asymmetric reduction of the prochiral carbonyl group of aliphatic .gamma.- and .delta.-keto acids by use of fermenting bakers' yeast
  作者：Masanori Utaka、Hisashi Watabu、Akira Takeda

  DOI：10.1021/jo00228a039

  日期：1987.9
• Gadnon, Rene; Grogan, Gideon; Levitt, Melissa S., Journal of the Chemical Society. Perkin transactions I, 1994, # 18, p. 2537 - 2544
  作者：Gadnon, Rene、Grogan, Gideon、Levitt, Melissa S.、Roberts, Stanley M.、Wan, Peter W. H.、Willetts, Andrew J.

  DOI：——

  日期：——