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4-methyl-2,6-dioxo-heptanedioic acid diethyl ester | 92904-97-7

中文名称
——
中文别名
——
英文名称
4-methyl-2,6-dioxo-heptanedioic acid diethyl ester
英文别名
4-Methyl-2,6-dioxo-heptandisaeure-diaethylester;Diethyl 4-methyl-2,6-dioxoheptanedioate;diethyl 4-methyl-2,6-dioxoheptanedioate
4-methyl-2,6-dioxo-heptanedioic acid diethyl ester化学式
CAS
92904-97-7
化学式
C12H18O6
mdl
——
分子量
258.271
InChiKey
AFMFXJCGLNZEOH-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

计算性质

  • 辛醇/水分配系数(LogP):
    1.2
  • 重原子数:
    18
  • 可旋转键数:
    10
  • 环数:
    0.0
  • sp3杂化的碳原子比例:
    0.67
  • 拓扑面积:
    86.7
  • 氢给体数:
    0
  • 氢受体数:
    6

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

反应信息

  • 作为反应物:
    描述:
    4-methyl-2,6-dioxo-heptanedioic acid diethyl ester乙醇 作用下, 160.0 ℃ 、9.81 MPa 条件下, 生成 6-hydroxy-4-methyl-hept-2t-enedioic acid diethyl ester 、 2,6-dihydroxy-4-methyl-heptanedioic acid diethyl ester
    参考文献:
    名称:
    PCR Detection ofCapnocytophagaSpecies in Dental Plaque Samples from Children Aged 2 to 12 Years
    摘要:
    AbstractThe purpose of this study was to detect the presence of Capnocytophaga sputigena, C. ochracea, and C. gingivalis in plaque samples from the toothbrushes of 122 children, using a polymerase chain reaction (PCR) method. The subjects were 25, 85, and 12 children with healthy gingiva, gingivitis, and periodontitis, respectively, ranging in age from 2–12 years old. Plaque samples were collected from all erupted tooth sites using a sterile toothbrush. The mean amount of DNA recovered from the samples was approximately 19.3 μg, which was deemed sufficient for performing a PCR‐based survey. C. sputigena prevalence in healthy, gingivitis, and periodontitis subjects was 48.0%, 36.5% and 25.0%, respectively, that for C. ochracea was 100%, 89.4%, and 50.0%, respectively, and that for C. gingivalis was 96.0%, 84.7%, and 75.0%, respectively. The lowest age of positive subjects was approximately 2 years. Our results showed that C. sputigena was moderately prevalent, whereas C. ochracea and C. gingivalis were commonly detected in the oral cavities of the tested children, suggesting that all of these species become established in the early years.
    DOI:
    10.1111/j.1348-0421.2001.tb01269.x
  • 作为产物:
    描述:
    3-methyl-1,5-dioxo-pentane-1,2,4,5-tetracarboxylic acid tetraethyl ester 在 盐酸 作用下, 生成 4-methyl-2,6-dioxo-heptanedioic acid diethyl ester
    参考文献:
    名称:
    Type I Collagen Racemization and Isomerization and the Risk of Fracture in Postmenopausal Women: The OFELY Prospective Study
    摘要:
    类型I胶原蛋白(CTX)C端交联肽段的1209AHDGGR1214序列中的Asp1211残基可以经历自发的转译后修饰,即消旋化和异构化,导致四种异构体的形成:天然形式(α-L)和三种与年龄相关的形式,即异构化形式(β-L)、消旋化形式(α-D)以及异构化/消旋化形式(β-D)。先前的研究表明,类型I胶原蛋白的消旋化/异构化模式的变化可以通过测量CTX异构体的降解产物在体内进行评估,并可能与骨结构的改变相关。本研究的目的是前瞻性地检查不同尿液CTX异构体及其相关比率在预测408名年龄在50至89岁(均值64岁)的健康未治疗绝经后女性骨质疏松性骨折中的价值,这些女性是OFELY队列的一部分。在中位6.8年的随访中,共记录到65名女性发生了16例椎体骨折和55例外周骨折。随后发生骨折的女性的四种CTX异构体的基线水平与343名未发生骨折女性的基线水平进行了比较。基线时,与对照组相比,发生骨折的女性的天然α-L-CTX与年龄相关异构体(β-L、α-D和β-D)的比率水平显著增加(p < 0.01)。在调整年龄、已有骨折和身体活动后的逻辑回归分析中,处于最高四分位的女性,其α-L/β-L、α-L/α-D和α-L/β-D-CTX比率的水平相较于处于最低三个四分位的女性,骨折风险增加了1.5至2倍,相对风险(RR)及95%可信区间(CI)分别为2.0(1.2-3.5)、1.8(1.02-2.7)及1.5(0.9-2.7)。通过评估血清骨碱性磷酸酶(ALP)或股骨颈骨密度(BMD)水平来调整α-L/β-L和α-L/α-D-CTX比率稍微降低了相对风险,但对α-L/β-L-CTX比率的显著性影响仍然存在(RR [95%] CI, 1.8 [1.1-3.2]在调整骨ALP后、1.8 [1.03-3.1]在调整BMD后、以及1.7 [0.95-2.9]在同时调整骨ALP和BMD后)。同时拥有高α-L/β-L-CTX比率和高骨ALP的女性,其骨折风险比仅拥有其中一个风险因素的女性高50%。同样,具有高CTX比率和低股骨颈BMD(T评分 < −2.5)的女性,其骨折风险更高,RR(95% CI)为4.5(2.0-10.1)。总之,尿液中天然和年龄相关形式CTX之间的比率增加,反映了类型I胶原蛋白消旋化/异构化程度的降低,与骨折风险增加独立于BMD且部分与骨重建率相关。这表明,通过尿液CTX比率的变化可以检测到的类型I胶原蛋白的异构化/消旋化的改变可能与增加的骨骼脆性有关。
    DOI:
    10.1359/jbmr.2002.17.5.826
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文献信息

  • Onno, Journal des Recherches du Centre National de la Recherche Scientifique, 1960, vol. 11, p. 205,226
    作者:Onno
    DOI:——
    日期:——
  • NON-PHTHALATE COMPOUNDS AS ELECTRON DONORS FOR POLYOLEFIN CATALYSTS
    申请人:Formosa Plastics Corporation, U.S.A.
    公开号:EP2969201A2
    公开(公告)日:2016-01-20
  • US20140275456A1
    申请人:——
    公开号:US20140275456A1
    公开(公告)日:2014-09-18
  • US9790291B2
    申请人:——
    公开号:US9790291B2
    公开(公告)日:2017-10-17
  • [EN] NON-PHTHALATE COMPOUNDS AS ELECTRON DONORS FOR POLYOLEFIN CATALYSTS<br/>[FR] COMPOSÉS NON-PHTALATE COMME DONNEURS D'ÉLECTRONS POUR LES CATALYSEURS DE POLYOLÉFINE
    申请人:FORMOSA PLASTICS CORP USA
    公开号:WO2014160012A2
    公开(公告)日:2014-10-02
    Non-phthalate compounds having a structure represented by the general formula (I) and a method for using same are provided as electron donors in the Ziegler-Natta type catalyst system for the homopolymerization or copolymerization of alpha olefins. The non-phthalate compounds may be used in the preparation of the solid catalyst component, thus serving as "internal electron donors", or employed during or prior to polymerization as "external electron donors", and therefore they can be used to prepare phthalate-free polyolefins.
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