103549-24-2Relevant academic research and scientific papers
Biomimetic semi-synthesis of fradcarbazole A and its analogues
Wang, Liping,Mei, Xiangui,Wang, Cong,Zhu, Weiming
, p. 7990 - 7997 (2015)
The first synthesis of fradcarbazole A (1) has been accomplished by using a biomimetic intramolecular cyclization/dehydration to construct the staurosporine-thiazole-indole skeleton. The phenyl and oxazole analogues of fradcarbazole A (2-4) were also synthesized using the same strategy. Compounds 1-4 displayed cytotoxicity against A549 cell line with IC50 values of 0.4-3.6 μM, induction of G0/G1 arrest of A549 cell cycle at 10 μM, and inhibition of PKC-β kinase with IC50 values of 0.5-0.9 μM.
Reduction of 1-pyrrolyl and 1-indolyl carbamates to hemiaminals
Hsu, He-Chu,Hou, Duen-Ren
, p. 7169 - 7171 (2009)
Hemiaminals of pyrroles and indoles have been prepared from the lithium aluminum hydride reduction of 1-pyrrolyl and 1-indolyl carbamates with good yields (67-82%). These carbamates are more reactive than aliphatic amides and carbamates under the LAH reduction, but less reactive than esters.
A highly chemoselective Boc protection of amines using sulfonic-acid-functionalized silica as an efficient heterogeneous recyclable catalyst
Das, Biswanath,Venkateswarlu, Katta,Krishnaiah, Maddeboina,Holla, Harish
, p. 7551 - 7556 (2006)
A facile and versatile method for the chemoselective Boc protection of amines has been developed by a treatment with (Boc)2O in the presence of sulfonic-acid-functionalized silica as a catalyst. The method is general for the preparation of N-Boc derivatives of aliphatic (acyclic and cyclic), aromatic, and heteroaromatic amines; primary and secondary amines; aminols, amino-esters; and sulfonamides. The catalyst works under heterogeneous conditions and can be recycled.
Temperature responsive phosphorescent small unilamellar vesicles
Bhuyan, Mouchumi,Koenig, Burkhard
, p. 7489 - 7491 (2012)
Self-assembled lipid vesicles with embedded amphiphilic terbium(iii) complexes show a strong temperature dependence of their phosphorescence intensity and lifetime in the physiological range.
Synthesis of novel oxazolyl-indoles
Roy, Sudipta,Haque, Sakhina,Gribble, Gordon W.
, p. 3948 - 3954 (2006)
We describe the synthesis of oxazolyl-indoles that are structurally related to pimprinaphine. The effect of the indole N-cyanoalkyl substituents on the 2,3-dichloro-5,6-dicyano-1,4-benzoquinone (DDQ) mediated oxidation was evaluated. Georg Thieme Verlag Stuttgart.
Synthesis of naked amino-pyrroloindoline via direct aminocyclization of tryptamine
Shen, Zhigao,Xia, Zilei,Zhao, Huijun,Hu, Jiadong,Wan, Xiaolong,Lai, Yisheng,Zhu, Chen,Xie, Weiqing
, p. 5381 - 5384 (2015)
The first direct access to unprotected amino-pyrroloindoline via aminocyclization of tryptamine and tryptophan has been described. A variety of structurally diverse amino-pyrroloindolines are furnished by the use of O-(2,4-dinitrophenyl)hydroxylamine (DPH
An efficient and highly chemoselective N-Boc protection of amines, amino acids, and peptides under heterogeneous conditions
Jahani, Fatemeh,Tajbakhsh, Mahmood,Khaksar, Samad,Azizi, Mohamad Reza
, p. 1035 - 1043 (2011)
A simple and efficient procedure for chemoselective mono-N-Boc protection of various structurally diverse amines, amino acids, and peptides with di-tert-butyl dicarbonate using Amberlyst-15 as catalyst in ethanol is described. The catalyst can be readily separated from the reaction products with simple filtration and recovered for direct reuse. No competitive side-reactions such as formation of isocyanate, urea, oxazolidinone, and N,N-di-Boc derivatives were observed.
Synthesis of tetrahydro-β-carbolines, β-carbolines, and natural products, (±)-harmicine, eudistomin U and canthine by reductive Pictet Spengler cyclization
Pakhare, Deepali S.,Kusurkar, Radhika S.
, p. 6012 - 6015 (2015)
Reductive Pictet Spengler cyclization was used for the synthesis of naturally occurring β-carbolines, eudistomin U, and canthine. Other biologically important β-carbolines as well as tetrahydro-β-carboline, such as (±)-harmicine were also synthesized usin
A generic approach for the catalytic reduction of nitriles
Caddick, Stephen,Judd, Duncan B.,Lewis, Alexandra K. De K.,Reich, Melanie T.,Williams, Meredith R. V.
, p. 5417 - 5423 (2003)
The scope of nickel boride mediated reduction of nitriles has been extended further to allow the preparation of Boc protected amines via a mild catalytic process. It is noteworthy that the toxicity of this procedure is greatly reduced due to its catalytic
Dragmacidin e synthesis studies. Preparation of a model heptacyclic core structure
Feldman, Ken S.,Ngernmeesri, Paiboon
, p. 4502 - 4505 (2010)
The conversion of a cycloheptannelated indole platform into the heptacyclic core structure of dragmacidin E proceeded over nine steps. Key sequences include a cyclocondensation to form an intermediate dihydropyrazinone ring and the conversion of a cyclic urea into the cyclic guanidine of the target.
