T. Eicher; S. Hauptmann, The Chemistry of Heterocycles: Structure, Reactivity, Synthesesand Applications; Thieme-Verlag: New York (1995).
W.J. Houlihan, W.A. Remers, R.K. Brown, Indoles, Wiley: New York (1992).
B. R. J. sunberg, The Chemistry of Indoles: Part I, Academic Press: New York(1996).
I. S. Biradar, S.Y. Manjunath, Indian J. Chem., 43B, 389 (2004).
S. S. Panda, P. V. R. Chawdary, J. Pharma. Sci., 70, 208 (2008).
G. S. Singh, S. Boll, Chem. Form.,133, 76 (1994).
J. L. Stanton, M. H. Ackerman; J. Med Chem., 26, 986 (1983).
K. Kaminnski, J. Obninska, Bio. Org. Med. Chem., 16, 4921 (2008).
Archana, P. Rani, K. Bajaj, V. K. Srivastava, A. Kumar, A. Forsch, Drug. Res., 53, 301 (2003).
S. Sharma, V. K. Srivastava, A. Kumar, Indian. J. Chemistry., 41B, 2647 (2002).
K. Bajaj, V. K. Srivastava, S. Lata, R. Chandra, A. Kumar, Indian. J. Chem., 42B, 1723 (2003).
B. J. Brimmer, A. Jonatha, Coates and Wicthard, Tetrahedron., 44, 8741 (2003).
V. Alagaramy, P. Parthiban, Rasayan journal of chemistry, 4, 24 (2011).
V. Klink, G.van Koten, G. Green Chem., 5, 470 ( 2003).
A. Rajashegaran, P. P. Thambi, Eur. J. Chem., 40, 1359 (2005).
Y. Waki, H. J. Tanaka,. Org. Chem. 68, 3938 (2003).
X. Tao, Y. Qian, J. Huang, Chem. Commun., 24, 1444 (2003).
J. Walker, Chem. Rev. 93, 1937 (1993).
G. Gribble, Chem. Soc. Rev. 28, 335 (1999).
M. Sathiya, S. Guhanathan, World. J. Pharma. Res., 7, 805, (2018).