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Molecules 2011, 16(8), 6541-6548; doi:10.3390/molecules16086541
Article

Rauniticine-allo-Oxindole B and Rauniticinic-allo Acid B, New Heteroyohimbine-Type Oxindole Alkaloids from the Stems of Malaysian Uncaria longiflora var. pteropoda

1
,
1
,
2
 and
1,*
1 Faculty of Applied Sciences, Universiti Teknologi MARA, 40450 Shah Alam, Selangor, Malaysia 2 Department of Chemistry, Universiti Malaya, Kuala Lumpur 50603, Malaysia
* Author to whom correspondence should be addressed.
Received: 20 June 2011 / Revised: 15 July 2011 / Accepted: 20 July 2011 / Published: 4 August 2011
(This article belongs to the Special Issue Alkaloids: Novel Therapeutic Perspectives)
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Abstract

Two new heteroyohimbine-type oxindole alkaloids, rauniticine-allo-oxindole B and rauniticinic-allo acid B, have been successfully isolated from the stems extract of Malaysian Uncaria longiflora var. pteropoda. The structures of the two new alkaloids were determined by spectroscopic analysis.
Keywords: Uncaria longiflora; rubiaceae; oxindole alkaloids; heteroyohimbine; rauniticine-allo-oxindole B; rauniticinic-allo acid B Uncaria longiflora; rubiaceae; oxindole alkaloids; heteroyohimbine; rauniticine-allo-oxindole B; rauniticinic-allo acid B
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).
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Salim, F.; Ismail, N.H.; Awang, K.; Ahmad, R. Rauniticine-allo-Oxindole B and Rauniticinic-allo Acid B, New Heteroyohimbine-Type Oxindole Alkaloids from the Stems of Malaysian Uncaria longiflora var. pteropoda. Molecules 2011, 16, 6541-6548.

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