的单釜,过渡金属-自由,多米诺迈克尔/ S Ñ普遍适用性的Ar协议已经通过使用硝基甲烷和设计用于多官能萘的区域选择性合成邻-haloaryl ynones。硝基甲烷作为一种碳碳负离子源的使用,并被引入到各种炔酮中,最终以芳族硝基取代基的形式出现。该多米诺法在多环生物碱马卡平的全合成中的应用证明了该方法的有效性。在概念上是简单的方法来影响ynones显示广泛的底物范围和官能团耐受性,并已与被取代的硝基甲烷实现的区域选择性,多功能benzoannulation以及与脂环ö-单倍体。
New findings in Bischler-Napieralski reaction: Formation of 12-azonianaphth[1. 2-b]azulenes from 2-aryl-1-naphthylformamides and their unexpected transformation into benz[g]indoles through hydride reduction
作者:Tsutomu Ishikawa、Tatsuru Saito、Shigeru Noguchi、Hisashi Ishii、Shuichiro Ito、Tadashi Hata
DOI:10.1016/0040-4039(95)00399-w
日期:1995.4
The Bischler-NapieralskiReaction (BNR) of N-[2-(2-alkoxy-4, 5-methylenedioxyphenyl)-1-naphthyl]-N-methylformamides using POCl3 abnormally gave 12-azonianaphth[1. 2-b]azulene derivatives, which could be effectively transformed into benz[g]indoles with a 1-alkoxy-8-oxabicyclo[3. 2. 1]oct-2-ene skeleton through hydride reduction, as additional cyclized products. In contrast, the BNR of naphthylformamides
使用POCl 3的N- [2-(2-烷氧基-4,5-亚甲基二氧苯基)-1-萘基] -N-甲基甲酰胺的Bischler-Napieralski反应(BNR)异常生成12-氮杂萘并[1]。2- b ] azulene衍生物,可以有效地转化为带有1-烷氧基-8-氧杂双环[3]的苯并[ g ]吲哚。2. 1]通过氢化物还原的辛-2-烯骨架,作为另外的环化产物。相反,在苯环的相同位置具有甲氧基取代亚甲二氧基官能团的萘甲酰胺的BNR导致正常环化,定量得到苯并[ c ]菲啶鎓氯化物。将讨论异常BNR和吲哚形成的推测机制。
Chemical transformation of protoberberines. XVI. Regioselective introduction of an oxy functionality at the C12-position of the benzo(c)phenanthridine skeleton: A convenient synthesis of macarpine from oxychelirubine.
A novel method for the introduction of an oxy functionality at the C12-position of the benzo[c]phenanthridine skeleton was developed. The method was successfully applied to a biomimetic synthesis of macarpine (3) from oxychelirubine (15), which was easily derived from the corresponding protoberberine (9).
Purification and characterization of dihydrobenzophenanthridine oxidase from elicited Sanguinaria canadensis cell cultures
作者:Hirohumi Arakawa、W.Gregg Clark、Mikulas Psenak、Carmine J. Coscia
DOI:10.1016/0003-9861(92)90236-p
日期:1992.11
treatment of Papaveracea cells with fungal elicitors, the biosynthesis of benzo[c]phenanthridine alkaloids is induced. Dihydrobenzophenanthridineoxidase, which catalyzes a later step in the biogenesis of these alkaloids, is one of the enzymes whose activity is elevated in the process. Here we report the 211-fold purification of the oxidasefromelicitedSanguinariacanadensis by a combination of ammonium
Partial purification and characterization of dihydrobenzophenanthridine oxidase from Eschscholtzia californica cell suspension cultures
作者:H. M. Schumacher、M. H. Zenk
DOI:10.1007/bf00272975
日期:1988.1
The observation that upon elicitationcell suspension cultures of Eschscholtzia california showed a decrease of dihydromacarpine with a concomittant increase of macarpine led to the discovery of a novel enzyme which catalyzes the oxidation of dihydrobenzophenanthridines in the presence of oxygen. The enzyme was enriched approx. 70-fold. It has a pH-optimum of 7.0, an isoelectric point at pH 8.8, molecular
对 Eschscholtzia california 的细胞悬浮培养物的诱导显示出二氢马卡品减少而马卡品增加的观察结果导致发现了一种新的酶,该酶在氧气存在下催化二氢苯并菲啶的氧化。酶被富集约。70 倍。它的最佳 pH 值为 7.0,等电点为 pH 8.8,分子量为 56 kD,并显示出高度的底物特异性。该酶显然催化了 A 环和 D 环中含有亚甲基二氧取代基的苯并菲啶生物碱形成的最后一步。
CATALASE INHIBITOR AND METHOD FOR MEASURING ANALYTE USING CATALASE INHIBITOR
申请人:PHC Holdings Corporation
公开号:EP3473715A1
公开(公告)日:2019-04-24
Provided is a catalase inhibitor comprising a compound represented by formula (I):
wherein R1 to R4 independently represent a hydrogen atom, a halogen atom, an amino group, a hydroxyl group, a carbonyl group,or a hydrocarbon group having 1 to 4 carbon atoms, wherein the hydrocarbon group may have at least one substituent selected from the group consisting of a halogen atom, an amino group, a hydroxyl group and a carbonyl group; and X- represents an anionic chemical species.