New uses of Westphal condensation: Synthesis of flavocorylene and related indolo[2,3-a]quinolizinium salts.
摘要:
Using the Westphal condensation, flavocorylene and related Indolo[2,3-a]quinolizinium salts have been prepared in two steps, starting from commercially available beta-carboline derivatives.
Synthesis of substituted indolizino[8,7-b]indoles from harmine and their biological activity
作者:Zh. S. Nurmaganbetov、E. E. Shultz、S. V. Chernov、A. Zh. Turmukhambetov、R. B. Seydakhmetova、M. M. Shakirov、G. A. Tolstikov、S. M. Adekenov
DOI:10.1007/s10593-011-0698-z
日期:2011.3
The reaction of harmine with phenacyl bromides or ethyl bromoacetate gives quaternized harmine derivatives. The cyclization of the phenacylharminium salts yields the corresponding 2-aryl-11H-indolizino[8,7-b]indoles. Vilsmaier-Haack formylation of 11H-indolizino[8,7-b]indoles leads to the corresponding 3,10-bisformyl derivatives. The acylation proceeds selectively at C(3) to give 3-acetyl-2-aryl-11H-indolizino[8
甘氨酸与苯甲酰溴或溴乙酸乙酯的反应得到季铵化的甘氨酸衍生物。苯甲酰基铵盐的环化产生相应的2-芳基-11H-吲哚并[8,7- b ]吲哚。11 H-吲哚并[8,7- b ]吲哚的Vilsmaier-Haack甲酰化反应生成相应的3,10-双甲酰基衍生物。酰化作用选择性地在C(3)进行,得到3-乙酰基-2-芳基-11H-吲哚并[8,7- b ]吲哚。
New uses of Westphal condensation: Synthesis of flavocorylene and related indolo[2,3-a]quinolizinium salts.
作者:María P. Matia、Jesús Ezquerra、José L. García-Navío、Juan J. Vaquero、Julio Alvarez-Builla
DOI:10.1016/0040-4039(91)80538-h
日期:1991.12
Using the Westphal condensation, flavocorylene and related Indolo[2,3-a]quinolizinium salts have been prepared in two steps, starting from commercially available beta-carboline derivatives.
Synthesis and Antitumor Activity of Javacarboline Derivatives
作者:Tamotsu Nikaido、Hiroshi Yoshino、Kazuo Koike
DOI:10.3987/com-98-8378
日期:——
Microwave assisted Westphal condensation and its application to synthesis of sempervirine and related compounds
作者:T.S. Chinta Rao、Sanjay Saha、Gajendra B. Raolji、Balaram Patro、Prabhaker Risbood、Michael J. Difilippantonio、Joseph E. Tomaszewski、Sanjay V. Malhotra
DOI:10.1016/j.tetlet.2012.11.059
日期:2013.2
A concise synthesis of a potent lead in anticancer therapeutics, sempervirine, was achieved by one pot Westphal condensation, ester hydrolysis, and decarboxylation under microwave irradiation. The method was extended to the synthesis of several similar heterocycles.