2717-76-2Relevant articles and documents
Method for preparing pharmaceutical intermediate of tryptophan derivative
-
, (2021/09/21)
The synthesis method comprises the following steps: L - tryptophan derivatives are taken as starting materials, and esterification is carried out in sequence. The amidation, Boc protection, hydrolysis, amidation or sequential esterification, amidation, Boc protection, hydrogenation, hydrolysis, amidation yields a target product, a tryptophan derivative pharmaceutical intermediate. The preparation method has the advantages of cheap and easily available raw materials, environment friendliness, less process three wastes, accords with the idea of green pharmacy, mild reaction conditions, simple process, simple and convenient operation, high yield and purity and easy amplification and production.
Synthesis of tryptophans by Lewis acid promoted ring-opening of aziridine-2-carboxylates: Optimization of protecting group and Lewis acid
Tirotta, Ilaria,Fifer, Nathan L.,Eakins, Julia,Hutton, Craig A.
, p. 618 - 620 (2013/02/23)
The preparation of tryptophan derivatives through the Lewis acid promoted substitution of aziridine carboxylates with indole was found to be accompanied by a ring-expansion reaction to generate an oxazolidinone byproduct. The ratio of tryptophan to oxazol
Orthogonal protecting groups in the synthesis of tryptophanyl- hexahydropyrroloindoles
Ruiz-Sanchis, Pau,Savina, Svetlana A.,Acosta, Gerardo A.,Albericio, Fernando,Alvarez, Mercedes
supporting information; experimental part, p. 67 - 73 (2012/01/15)
The synthesis of various polycyclic systems containing aC 3a-Ni bond between a hexahydropyrrolo[2,3-b]indole and an indole tryptophan is described here. A series of experiments were performed to determine the best combination of five orthogonal protecting groups and the best reaction conditions for formation of said bond, which is a common feature among many recently discovered marine natural products.