(2S)-2-Methyl-octanoic acid | 3004-93-1

• 物质功能分类: 有机原料 - 羧酸类化合物及衍生物
• 分子结构分类: 有机化合物 - 脂质和类脂质分子 - 脂肪酰基
• 英文名称: (2S)-2-Methyl-octanoic acid
• 英文别名: (2S)-2-methyloctanoic acid；(S)-2-methyloctanoic acid；2-(S)-methyloctanoic acid；(2S)-methyloctanoic acid；S-2-methyloctanoic acid
• CAS: 3004-93-1；61910-09-6；128441-05-4；61866-40-8
• 化学式: C₉H₁₈O₂
• 分子量: 158.241
• InChiKey: YSEQNZOXHCKLOG-QMMMGPOBSA-N

物化性质

• 沸点：
  246.47°C (estimate)
• 密度：
  0.9113 (rough estimate)
• LogP：
  3.089 (est)

计算性质

• 辛醇/水分配系数(LogP)：
  3.4
• 重原子数：
  11
• 可旋转键数：
  6
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.89
• 拓扑面积：
  37.3
• 氢给体数：
  1
• 氢受体数：
  2

安全信息

• 安全说明：
  S26,S36/37/39
• 危险类别码：
  R36/37/38
• 海关编码：
  2915900090
• 包装等级：
  III
• 危险类别：
  8
• 危险性防范说明：
  P260,P264,P280,P301+P330+P331,P303+P361+P353,P304+P340,P305+P351+P338,P310,P363,P405,P501
• 危险品运输编号：
  3265
• 危险性描述：
  H314

反应信息

• 作为反应物：
  描述：

  (2S)-2-Methyl-octanoic acid 在 lithium aluminium tetrahydride 作用下， 以 乙醚 为溶剂， 反应 1.0h， 以88%的产率得到(2S)-2-methyloctan-1-ol
  参考文献：
  名称：

  Total synthesis and structure assignment of the antitumor antibiotic aranorosin

  摘要：

  The structurally unique antifungal and antitumor antibiotic aranorosin was prepared in a convergent, stereoselective sequence. Oxidative cyclization of N-protected L-tyrosine, followed by face-selective 1,2-addition of [(benzyloxy)methyl]lithium, Henbest oxidation in the presence of Kishi's radical inhibitor, and simultaneous N,O-deprotection led to an amino diol which was N-acylated with the fatty acid side-chain segment. After a low-temperature reduction of the lactone moiety to the lactol, the carbonyl function was regenerated under neutral conditions by diol cleavage with sodium periodate. Preparation of the acid side chain involved a diastereoselective imide alpha-alkylation directed by Evans' oxazolidinone auxiliary, followed by a series of Wittig-Horner chain extensions. Since the relative configuration at the C (6') position of the natural product had not been determined, we prepared both the (6'S) and the (6'R) isomers of aranorosin. Comparison of synthetic material with the reported spectral data for natural (-)-aranorosin, especially H-1 and C-13 NMR and [alpha]D, did not allow a definitive assignment. After purification of a sample of the isolated material from Pseudoarachniotus roseus, the corrected [alpha]D strongly indicated the (6'R)-stereochemistry for the natural compound. This assignment was confirmed by circular dichroism spectra for (6'S)- and (6'R)-aranorosin and the natural material.

  DOI：

  10.1021/jo00077a050
• 作为产物：
  描述：

  (S)-4-benzyl-3-octanoyloxazolidin-2-one 在 双氧水 、 sodium hexamethyldisilazane 、 lithium hydroxide 作用下， 以 四氢呋喃 、 水 为溶剂， 反应 5.5h， 生成 (2S)-2-Methyl-octanoic acid
  参考文献：
  名称：

  抗胰腺癌天然产物Majusculamide D及其类似物的合成揭示了初步构效关系

  摘要：

  majusculamide D ( 1 )的全合成是由市售材料实现的。此外，我们还合成了八种类似物，包括三种脂肪酸链不同的 majusculamide D 立体异构体。在 MTT 测定中，包括简化类似物29在内的六种类似物对 Panc-1 细胞表现出显着的纳摩尔水平 IC 50值。初步的SAR分析表明majusculamide D的C 10 和C 2− C 3 不饱和双键上的羟基对于维持对Panc-1细胞的高活性以及C 40-Me 和C 42-Me基团的定向至关重要是可以忍受的。

  DOI：

  10.1002/cjoc.202300526

文献信息

• [EN] METHOD FOR PRODUCING OPTICALLY ACTIVE CARBOXYLIC ACID<br/>[FR] METHODE SERVANT A PREPARER UN ACIDE CARBOXYLIQUE POSSEDANT UNE ACTIVITE OPTIQUE
  申请人：TAKASAGO PERFUMERY CO LTD

  公开号：WO2004087632A1

  公开（公告）日：2004-10-14

  A method for producing a desired optically active carboxylic acid with a high optical purity, wherein a complex catalyst used can be recovered and reused as an aqueous solution. The method contains the step of subjecting an α,β-unsaturated carboxylic acid in water or a mixed solvent of water and a water-insoluble organic solvent in the presence of a sulfonated BINAP-Ru complex represented by the formula [3]: [RuX(arene)(SO?3#191M)?2#191-BINAP}]X [3]wherein X represents a chlorine atom, a bromine atom or an iodine atom, arene represents a benzene or an alkyl-substituted benzene,M represents an alkaline metal atom, and BINAP represents 2,2'-bis(diphenylphosphine)-1,1'-binaphthyl to an asymmetric hydrogenation. The sulfonated BINAP-Ru complex can be recycled.

  一种用于生产具有高光学纯度的所需光学活性羧酸的方法，其中所使用的复合催化剂可以作为水溶液被回收和重复使用。该方法包括在水中或水和水不溶性有机溶剂的混合溶剂中，在存在由公式[3]表示的磺化BINAP-Ru复合物的情况下，使α，β-不饱和羧酸经历不对称氢化的步骤：[RuX(arene)(SO?3#191M)?2#191-BINAP}]X [3]，其中X代表氯原子、溴原子或碘原子，arene代表苯或烷基取代的苯，M代表碱金属原子，BINAP代表2,2'-联苯二膦基-1,1'-联萘基。磺化BINAP-Ru复合物可以回收利用。
• A Synthetic Approach to Diverse 3-Acyltetramic Acids via <i>O</i>- to <i>C</i>-Acyl Rearrangement and Application to the Total Synthesis of Penicillenol Series
  作者：Tetsuya Sengoku、Yuta Nagae、Yasuaki Ujihara、Masaki Takahashi、Hidemi Yoda

  DOI：10.1021/jo300527f

  日期：2012.5.4

  efficient approach to medicinally important α-branched 3-acyltetramic acids, the key reaction of O- to C- acyl rearrangement using α-amino-acid-derived 4-O-acyltetramic acids was extensively examined in the presence of various metal salts. Use of CaCl2 or NaI dramatically changed the results in the reaction efficiency and rapidly brought about the desired α-branched 3-acyltetramic acids in markedly

  为了有效地利用具有重要医学意义的α-支链3-酰基四酸，在各种金属盐存在下，广泛研究了使用α-氨基酸衍生的4- O-酰基四酸对O-进行C酰基重排的关键反应。。CaCl 2或NaI的使用显着改变了反应效率的结果，并以显着提高的产率迅速产生了所需的α-支化的3-酰基四酸。我们还讨论了重排条件下C5立体中心的差向异构化以及C3和C5的结构变异耐受性。除了先前在成功合成新的细胞毒性四酸青霉素A 1方面的成功之外，，这种方法也可以应用于青霉素A 2的第一次全合成。
• Volatile Methyl Esters of Medium Chain Length from the Bacterium Chitinophaga Fx7914
  作者：Thorben Nawrath、Klaus Gerth、Rolf Müller、Stefan Schulz

  DOI：10.1002/cbdv.201000190

  日期：——

  The analysis of the volatiles released by the novel bacterial isolate Chitinophaga Fx7914 revealed the presence of ca. 200 compounds including different methyl esters. These esters comprise monomethyl- and dimethyl-branched, saturated, and unsaturated fatty acid methyl esters that have not been described as bacterial volatiles before. More than 30 esters of medium C-chain length were identified, which

  对新型细菌分离物Chitinophaga Fx7914释放的挥发物的分析表明存在ca。200种化合物，包括不同的甲酯。这些酯包含以前从未被描述为细菌挥发物的单甲基和二甲基支化的，饱和和不饱和的脂肪酸甲酯。鉴定出30多种中等C链长度的酯，它们属于5个主要类别，即（S）-2-甲基链烷酸甲酯（A类），（S）-2甲基，（ω-1）-二甲基链烷酸甲酯（B类） ），2，（ω-2）-二甲基链烷酸甲酯（C类），（E）-2-甲基烷-2-烯酸甲酯（D类）和甲基（E）-2，（ω-1）-二甲基烷- 2-烯酸酯（E类）。通过GC / MS分析和目标化合物的合成验证了化合物的结构，即目标化合物为（S）-2-甲基辛酸甲酯（28），（S）-2,7-二甲基辛酸甲酯（（S）-43），2,6-二甲基辛酸甲酯（49），（E）-2-甲基壬-2-烯酸甲酯（20a）和（E）-2,7-二甲基辛-2-烯酸甲酯（41a）。此外，如通过使用手性相的GC
• [EN] ISOXAZOLYL SUBSTITUTED BENZIMIDAZOLES<br/>[FR] BENZIMIDAZOLES SUBSTITUÉS PAR UN ISOXAZOLYLE
  申请人：CELLCENTRIC LTD

  公开号：WO2016170324A1

  公开（公告）日：2016-10-27

  A compound which is a benzimidazolyl isoxazole of formula (I): wherein: R0and R, which are the same or different, are each H or C1-6 alkyl; R9, R9 and R9, which are the same or different, are each H or F; X is -(alkn-, -alk-C(=O)-NR-, -alk-NR-C(=O)- or -alk-C(=O)-; R1 is selected from -S(=O)2R'; a 4- to 6-membered, C-linked heterocyclic group which is unsubstituted or substituted; and an N-linked spiro group of the following formula: R2 and R2', which are the same or different, are each H or C1-6 alkyl, or R2 and R2' form, together with the C atom to which they are attached, a C3-6 cycloalkyl group; R3 and R3, which are the same or different, are each H, C1-6 alkyl, OH or F; R4 is phenyl or a 5- to 12-membered, N-containing heteroaryl group and is unsubstituted or substituted; alk is C1-6 alkylene; R' is C1-6 alkyl; and n is 0 or 1; or a pharmaceutically acceptable salt thereof. The compound has activity in modulating the activity of p300 and/or CBP and is used to treat cancer, particularly prostate cancer.

  一种化合物，是一种具有以下结构的苯并咪唑基异唑烷（I）：其中：R0和R，相同或不同，分别为H或C1-6烷基；R9，R9和R9，相同或不同，分别为H或F；X为-(烷基-，-烷基-C(=O)-NR-，-烷基-NR-C(=O)-或-烷基-C(=O)-；R1从-S(=O)2R'，未取代或取代的4-至6-成员的C-连接的杂环基，以及以下式的N-连接的螺环基中选择：R2和R2'，相同或不同，分别为H或C1-6烷基，或者R2和R2'与它们连接的C原子一起形成C3-6环烷基；R3和R3，相同或不同，分别为H，C1-6烷基，OH或F；R4为苯基或未取代或取代的含氮5-至12-成员的杂芳基；烷基为C1-6烷基；R'为C1-6烷基；n为0或1；或其药用盐。该化合物具有调节p300和/或CBP活性的作用，并用于治疗癌症，特别是前列腺癌。
• Total Synthesis and Absolute Configuration of Epicoccamide D, a Naturally Occurring Mannosylated 3-Acyltetramic Acid
  作者：Sebastian Loscher、Rainer Schobert

  DOI：10.1002/chem.201301914

  日期：2013.8.5

  The endofungal metabolite epicoccamide D was synthesised in eighteen steps and 17 % yield as the first member of the family of natural glycotetramic acids. The modular character of the synthesis opens access also to analogues featuring different sugars and spacers. It comprises several high‐yielding key steps. The β‐D‐mannosyl group was introduced by using an α‐D‐glucosyl imidate donor with subsequent

  作为天然糖四酸家族的第一个成员，用十八个步骤合成了真菌内代谢物表球菌酰胺D，产率为17％。合成的模块化特征也使人们可以使用具有不同糖和间隔基的类似物。它包含几个高收益的关键步骤。所述β- d -mannosyl组通过使用α-引入d -glucosyl亚氨酸酯与随后的氧化还原性差向异构化的供体在C-2'。吡咯烷环通过N-（β-酮酰基）-N-丙氨酸丙氨酸的Lacey-Dieckmann缩合定量关闭。将所得的3- [ω-（β- d -mannosyl）十八碳-2-烯酰基]特特拉姆酸是在铑催化剂的存在下（氢化ř，R）-[Rh（Et-DUPHOS）] [BF 4 ]建立（7 S）-立体中心。仅在将酰基四酸作为BF 2螯合物封端以防止金属催化剂被捕获后才有可能。我们还分配了天然产品的迄今未知的结构为5小号，7小号通过其的比较13 C NMR光谱和光学旋转数据与我们的两种合成5的小号，7 - [R / š