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Dive into the research topics where Venkataraman Sundaram is active.

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Featured researches published by Venkataraman Sundaram.


Synthetic Communications | 2006

New Synthesis of Donepezil Through Palladium‐Catalyzed Hydrogenation Approach

Chandrashekar R. Elati; Naveenkumar Kolla; Subrahmanyeswara Rao Chalamala; Pravinchandra J. Vankawala; Venkataraman Sundaram; Himabindu Vurimidi; Vijayavitthal T. Mathad

Abstract A new, economical, and efficient process has been developed for large‐scale synthesis of donepezil 1, an anti‐Alzheimers drug. The process involves palladium‐catalyzed hydrogenation of (2E)‐5,6‐dimethoxy‐2‐(pyridin‐4‐ylmethylene)indan‐1‐one 6 to provide 5,6‐dimethoxy‐2‐(piperidin‐4‐ylmethyl)indan‐1‐one 8 as a key step. DRL‐IPD Communication No. 006.


Synthetic Communications | 2005

Unusual p-toluene sulfonic acid-catalyzed carbon-carbon bond formation

Shanmugam Govindan; Madhavi Maddipatla; Anil Kumar Podichetty; Prabhakahr Macharla; Venu Nalivela; Venkataraman Sundaram; Vijayavitthal T. Mathad; Mahesh Reddy Ghanta; Ravindra Kumar Yalavarti

Abstract Attempts to synthesize the antidepressant drug atomoxetine directly by p-TSA‐catalyzed reaction between o‐cresol and N‐methyl‐3‐phenyl‐3‐hydroxypropyl amine in toluene at reflux temperature surprisingly resulted in the formation of ortho‐substituted phenol derivative. The structure is unambiguously confirmed by single crystal X-ray.


Archive | 2004

Process for the preparation of [R-(E)-1-[[[1-[3-[2-[7-chloro-2-quinolinyl]ethenyl]phenyl]-3-[2-(1-hydroxy-1-methylethyl)phenyl]propyl]thio]methyl]cyclopropaneacetic acid (montelukast) and its pharmaceutically acceptable salts

Venkataraman Sundaram; Srinivasan Thirumalai Rajan; Veera Venkata Naga Chandra Sekhar Bulusu; AlokKumar Srivastav; Ravi Kumar Kasturi; Sanjeev Kumar Aavula


Archive | 2005

Process for preparing voriconazole

Venkataraman Sundaram; Venkata Bhaskara Rao Uppala; Surya Prabhakar Akundi; Venkateswarlu Muvva; Vijayawardhan Chitta; Alekhya Donthula; Manoj Ramesh Kharkar; Surya Narayana Devarakonda; Subba Reddy Peddireddy


Archive | 2004

Polymorphs of ezetimibe and process for preparation thereof

Venkataraman Sundaram; Srinivasan Thirumalai Rajan; Vaddadi Pattabhi Ramayya; Sunkara Vishnu Vardhan; Bulusu Subrahmanyam; Cheemalapati Venkata Annapurna Sasikala


Organic Process Research & Development | 2004

An improved and single-pot process for the production of pantoprazole substantially free from sulfone impurity

Vijayavitthal T. Mathad; Shanmugam Govindan; Naveen Kumar Kolla; Madhavi Maddipatla; Eswaraiah Sajja; Venkataraman Sundaram


Archive | 2004

PREPARATION OF ESCITALOPRAM

Venkataraman Sundaram; Vijayavitthai Thippannachar Mathad; Pravinachandra Jayanthilal Venkavala; Chandrashekar R. Elati; Naveenkumar Kolla; Shanmugam Govindan; Subrahmanyeshwara Rao Chalamala; Srinivas Gangula


Archive | 2005

Process for preparing tegaserod

Venkataraman Sundaram; Srinivasulu Gudipati; Venkata Naga Brahmeswara Rao Mandava; Goverdhan Banda Reddy; Radhakrishna Singamsetty


Archive | 2006

Process for preparing crystalline form i of olanzapine

Venkataraman Sundaram; Sharat Narsapur Flat No. Pandurang; Vishal Parmar Bapat Bungalow Dayaram; Siva K.R. Flat G Block A Bommareddy; Hitendra Chaudhary Plot No. Sitaram


Archive | 2010

PROCESS FOR PREPARING (2R,3S/2S,3R)-2-(2,4-DIFLUOROPHENYL)-3-(5-FLUOROPYRIMIDIN-4-YL)-1-(1H-1,2,4-TRIAZOL-1-YL)BUTAN-2-OL

Venkataraman Sundaram; Venkata Bhaskara Rao Uppala; Surya Prabhakar Akundi; Venkateswarlu Muvva; Vijayawardhan Chitta; Alekhya Donthula; Manoj Ramesh Kharkar; Surya Narayana Devarakonda; Subba Reddy Peddireddy

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