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Journal of Asian Natural Products Research Volume 12, 2010 - Issue 10
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Original Articles

Ethylenediamine: an effective reagent for deacetylation of natural products

Ramasamy Mohankumar Asthagiri Herbal Research Foundation, 14/1 Second Main Road, Jaya Nagar, Tambaram Sanatorium, Chennai, 600 047, Tamilnadu, India
,
Kaliappan Ilango Department of Pharmaceutical Chemistry, SRM College of Pharmacy, Kattankulathur, Kancheepuram, 603 203, Tamilnadu, India
,
Vichangal Pridiuldi Santhanakrishnan Asthagiri Herbal Research Foundation, 14/1 Second Main Road, Jaya Nagar, Tambaram Sanatorium, Chennai, 600 047, Tamilnadu, India
,
Viswanathan Radhakrishnan Asthagiri Herbal Research Foundation, 14/1 Second Main Road, Jaya Nagar, Tambaram Sanatorium, Chennai, 600 047, Tamilnadu, India
&
Srinivasan Narasimhan Asthagiri Herbal Research Foundation, 14/1 Second Main Road, Jaya Nagar, Tambaram Sanatorium, Chennai, 600 047, Tamilnadu, IndiaCorrespondence[email protected]
Pages 851-858 | Received 07 Jan 2010, Accepted 08 Jul 2010, Published online: 28 Sep 2010
 
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Abstract

The use of ethylenediamine in methanol is described for the selective cleavage of the acetate group in nimbin (1) to 6-deacetyl nimbin (1a) under microwave irradiation. This method enables to deacetylate without affecting other functional groups such as α,β-unsaturated ketone, ester, ether, etc. in certain tetranortriterpenoids and other acetate-containing natural compounds.

Acknowledgements

R.M.K. thanks DBT, V.P.S. and V.R.K. thank CSIR for the financial support and Spic Science Foundation for the Analytical Center Facility.

Supporting Information

Supporting information is available online.

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