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Figure 1: Structure of Prodigiosin 1 highlighting the A, B, and C pyrrole rings The biosynthesis of Prodigiosin [ 28 ] [ 29 ] involves the convergent coupling of three pyrrole type rings (labeled A, B, and C in figure 1) from L -proline, L -serine, L -methionine, pyruvate, and 2-octenal.
Indole is an organic compound with the formula C 6 H 4 CCNH 3. Indole is classified as an aromatic heterocycle. It has a bicyclic structure, consisting of a six-membered benzene ring fused to a five-membered pyrrole ring. Indoles are derivatives of indole where one or more of the hydrogen atoms have been replaced by substituent groups.
Indole ethers at the benzene ring (1 C, 27 P) Indolecarboxamides (22 P) Indolocarbazoles (8 P) Indolones (1 P) Isotryptamines (8 P) M. Methylindoles (6 P) N ...
An early attempt to access 4,7-dihydroisoindole — the closest relative of thermodynamically unstable isoindole was performed 1985. [1] It was based on the classical Paal-Knorr synthesis under conditions which probably harmed the electron-rich pyrrole ring. Observed instability of 4,7-dihydroisoindole led researchers to conclude that it was ...
It has a bicyclic structure, consisting of a six-membered benzene ring fused to a five-membered nitrogen-containing ring. The compound is based on the indole structure, but the 2-3 bond is saturated. By oxidation/dehydrogenation it can be converted to indole. [1] [2] Indoline can be produced from the reaction of indole, zinc and 85% phosphoric ...
[1] [2] [3] The method involves the reaction of an α-amino-ketone (1) and a compound containing an electron-withdrawing group (e.g. an ester as shown) α to a carbonyl group (2). [ 4 ] The Knorr pyrrole synthesis
In organic chemistry and heterocyclic chemistry, isoindole consists of a benzene ring fused with pyrrole. [2] The compound is an isomer of indole. Its reduced form is isoindoline. The parent isoindole is a rarely encountered in the technical literature, but substituted derivatives are useful commercially and occur naturally.
Pyrrolines, also known under the name dihydropyrroles, are three different heterocyclic organic chemical compounds that differ in the position of the double bond.Pyrrolines are formally derived from the aromate pyrrole by hydrogenation. 1-Pyrroline is a cyclic imine, whereas 2-pyrroline and 3-pyrroline are cyclic amines.