摩熵化学
数据库官网
小程序
打开微信扫一扫
首页 分子通 化学资讯 化学百科 反应查询 关于我们
请输入关键词

methyl 8-benzyloxy-5-methoxy-1-oxo-1,2,3,4-tetrahydronaphthalene-2-carboxylate | 81504-90-7

中文名称
——
中文别名
——
英文名称
methyl 8-benzyloxy-5-methoxy-1-oxo-1,2,3,4-tetrahydronaphthalene-2-carboxylate
英文别名
——
methyl 8-benzyloxy-5-methoxy-1-oxo-1,2,3,4-tetrahydronaphthalene-2-carboxylate化学式
CAS
81504-90-7
化学式
C20H20O5
mdl
——
分子量
340.376
InChiKey
MUJPJYZDZLOSEC-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):
    3.19
  • 重原子数:
    25.0
  • 可旋转键数:
    5.0
  • 环数:
    3.0
  • sp3杂化的碳原子比例:
    0.3
  • 拓扑面积:
    61.83
  • 氢给体数:
    0.0
  • 氢受体数:
    5.0

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

点击查看最新优质反应信息

文献信息

  • Anthracyclines. X. The enantiospecific synthesis of ( - )-(7R)-7-Acetyl-7-hydroxy- 4,4-dimethoxy-5,6,7,8-tetrahydronaphthalen-1(4H)-one; a type I chiral dienone for the synthesis of 7-Deoxydaunomycinone
    作者:RA Russell、PS Gee、RW Irvine、RN Warrener
    DOI:10.1071/ch9841709
    日期:——

    8-Benzyloxy-5-methoxy-3,4-dihydronaphthalene-2-carboxylic acid (34) has been prepared by a four-step sequence from 5-methoxy-8-hydroxy-3,4-dihydronaphthalen-1(2H)-one. Condensation of the unsaturated acid (34) with ethyl (S)-prolinate in the presence of dicyclohexylcarbodiimide afforded the amide (35) which was enantioselectively cyclized to the bromo lactone (37). Debromination with tributyltin hydride and subsequent reaction of the lactone with methyllithium afforded (-)-(2R)-2-acetyl-8-benzyloxy-5-methoxy-1,2,3,4-tetrahydronaphthalen-2-ol. Removal of the benzyl ether by catalytic hydrogenation and oxidation of the resulting phenol with thallium(III) nitrate afforded the title chiral dienone.

    8-苄氧基-5-甲氧基-3,4-二氢-2-羧酸 (8-Benzyloxy-5-methoxy-3,4-dhydronaphthalene-2-carboxylic) 8-Benzyloxy-5-methoxy-3,4-dihydronaphthalene-2-carboxylic acid (34)是通过以下四个步骤制备的 5-甲氧基-8-羟基-3,4-二氢-1(2H)-酮。不饱和酸 不饱和酸 (34) 与(S)-脯乙酯在二环己基碳二亚胺存在下缩合,得到酰胺 (35) 在二环己基碳二亚胺存在下,不饱和酸 (34) 与(S)-脯乙酯缩合,得到酰胺 (35)。 内酯 (37)。用氢化三丁基锡进行脱反应,然后将内酯与甲硫醇反应生成内酯(37)。 内酯与甲基锂反应,得到 (-)-(2R)-2-乙酰基-8-苄氧基-5-甲氧基-1,2,3,4-四氢萘-2-醇。通过催化去除 催化加氢去除苄基醚,并用硝酸(III)氧化生成的苯酚硝酸(III)氧化除去苄基醚,得到标题手性二烯酮。
  • Asymmetric Synthesis of the AB Ring Segments of Daunomycin and 4-Demethoxydaunomycin
    作者:Franklin A. Davis、Charles Clark、Anil Kumar、Bang-Chi Chen
    DOI:10.1021/jo00084a042
    日期:1994.3
    Asymmetric hydroxylation of the potassium enolate of beta-keto ester 14, with (camphorsulfonyl)-oxaziridine (-)-7c [tetrahydro-9,9-dimethyl-8,8-dimethorry-4H-4a,7-methanooxazirino[3,2-i][2,1]-benzisothiazole 3,3-dioxide] affords alpha-hydroxy beta-keto ester (R)-(+)-15 in >95% ee. The high ee's are attributed to the fact that this enolate probably exists in one geometric form as a consequence of intramolecular chelation. Reduction of the ketone in 15 with triethylsilane and conversion of the ester group into the methyl ketone results in a highly efficient synthesis of the AB ring building block (R)-(-)-2-acetyl-5,8-dimethoxy-1,2,3,4-tetrahydro-2-napthol (3b), a key intermediate in the asymmetric synthesis of the antitumor agent 4-demethoxydaunomycin (1c). Selective deprotection of the 8-methoxy group in 3b with BBr3 gives 3a, important in the enantioselective synthesis of the clinically useful antitumor agent adriamycin (1b). Attempts to prepare 3a and 3b more directly by asymmetric hydroxylation of the enolates of methyl 5,8-dimethoxy-1,2,3,4-tetrahydro-2-naphthoate (9) or the 8-benzyloxy derivative of 16 resulted in low ee's, attributable to the formation of E/Z enolate mixtures and increased steric congestion in the transition state for hydroxylation.
查看更多