Results 91 to 100 of about 10,671 (149)

One-pot Ugi-azide and Heck reactions for the synthesis of heterocyclic systems containing tetrazole and 1,2,3,4-tetrahydroisoquinoline

Beilstein Journal of Organic Chemistry
A new method for the synthesis of heterocyclic systems containing tetrazole and tetrahydroisoquinoline is developed via the performance of one-pot Ugi-azide and Heck cyclization reactions.
Jiawei Niu, Yuhui Wang, Shenghu Yan, Yue Zhang, Xiaoming Ma, Qiang Zhang, Wei Zhang   +6 more
doaj   +1 more source

Asymmetric Synthesis of Tetrahydroisoquinoline Alkaloids Using Ellman's Chiral Auxiliary

Natural Product Communications, 2017
Chiral t -butylsulfinamide has been successfully employed for the stereoselective synthesis of 1-benzyl tetrahydroisoquinoline alkaloids. This is the first report on the synthesis of chiral 1-benzyltetrahydroisoquinoline natural products using tert ...
Y. Vikram Reddy, Dhanraj O. Biradar, B. Jagan Mohan Reddy, Aravinda Rathod, M. Himabindu, B. V. Subba Reddya   +5 more
doaj   +1 more source

(S)-4-tert-Butyl-2-(1,2,3,4-tetrahydroisoquinolin-3-yl)-1,3-thiazole

Acta Crystallographica Section E, 2012
In the title compound, C16H20N2S, a potential tetrahydroisoquinoline (TIQ) thiazole ligand, the N-containing six-membered ring of the TIQ unit adopts a half-chair conformation. There are four molecules in the asymmetric unit.
Sunayna Pawar, Thavendran Govender, Hendrik G. Kruger, Glenn E. M. Maguire   +3 more
doaj   +1 more source

Synthesis of Some Novel 11b-Substituted Pyrimido[6,1-a]-isoquinoline Derivatives

Molecules, 2004
A series of novel 11b-substituted 1,6,7,11b-tetrahydropyrimido[6,1-a]- isoquinoline-2,4-diones and 4-thioxo-1,3,4,6,7,11b-hexahydropyrimido[6,1-a]isoquinolin-2- ones were synthesized, utilizing two alternative strategies for ring closure of ...
Atanas P. Venkov, Iliyan I. Ivanov, Plamen A. Angelov   +2 more
doaj   +1 more source

Heterogeneous Catalysts in Pictet-Spengler-Type Reactions

Journal of Chemistry, 2013
Several solid catalysts were evaluated as an alternative for 1,2,3,4-tetrahydroisoquinoline synthesis by means of the Pictet-Spengler reaction. The reaction catalysed by a mixed oxide (Mg and Al) led to the best yield and good regioselectivity; using an ...
Rodolfo Quevedo, Camilo Perdomo, Sonia Moreno   +2 more
doaj   +1 more source

Organophotocatalytic synthesis of phosphoramidates

, 2016
We describe the use of visible light in conjunction with an organic dye for the synthesis of phosphoramidates. Cross dehydrogenative coupling reactions between phosphites and amines are reported using organic dyes and light as catalysts for the first ...
Hao, Guo, Kowalczuk, Agnieszka, Meazza, Marta, Rios, Ramon, Shirley, Luke, Yang, Jung Woon   +5 more
core   +1 more source

Selective N-alkylation of isoquinolines, benzazepines and thienopyridines with aromatic aldehydes and naphthols [PDF]

, 2015
Fülöp, Ferenc, Sas, Judit, Szatmári, István   +2 more
core   +2 more sources

Antidepressant-Like Effect of the Endogenous Neuroprotective Amine, 1MeTIQ in Clonidine-Induced Depression: Behavioral and Neurochemical Studies in Rats [PDF]

, 2017
Agnieszka Wąsik, Irena Romańska, Jerzy Michaluk, Lucyna Antkiewicz-Michaluk   +3 more
core   +1 more source

Chromophore content and molar absorptivity of phytochrome in the Pr-Form [PDF]

, 1981
Brandlmeier, Thomas, Rüdiger, Wolfhart, Scheer, Hugo   +2 more
core   +1 more source

Pyropheophytin a accompanies pheophytin a in darkened light grown cells of Euglena [PDF]

, 1981
Rüdiger, W., Scheer, Hugo, Schiff, J. A., Schoch, S., Siegelmann, H. W.   +4 more
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