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Maiti, P. C.
- A Possible Cannizzaro's Reaction of Berberine In Vivo
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PDF Views:139
Authors
Affiliations
1 Botanical Survey of India, Calcutta, IN
1 Botanical Survey of India, Calcutta, IN
Source
Nelumbo - The Bulletin of the Botanical Survey of India, Vol 3, No 1 (1961), Pagination: 53-54Abstract
Three alkaloids berberine, lambertine and berlambine occur simultaneously in Berberis lambertii Parker. This work deals with establishing that lambertine and berlambine are not artifacts during isolation. The author suggests that berberine has undergone Cannizzaro's reaction to produce the other two alkaloids, a reaction so far known in vitro taking place also in vivo.Full Text
- Triterpenes from the Leaves of Rhododendron cinnabarinum Hook. F.
Abstract Views :190 |
PDF Views:120
Authors
Affiliations
1 Botanical Survey of India, Calcutta, IN
1 Botanical Survey of India, Calcutta, IN
Source
Nelumbo - The Bulletin of the Botanical Survey of India, Vol 3, No 3-4 (1961), Pagination: 391-392Abstract
Petroleum ether extract of the leaves of Rhododendron cinnabarinum Hook. f. has yielded seven triterpenes of which five have been identified as friedelin, epi-friedelinol, α-amyrin, campanulin and ursolic acid occurring in 0.05, 0.08, 0.12, 0.02 and 0.3% respectively. A neutral triterpene m.p. 226° and an acidic triterpene (methyl ester mp. 232°) have also been obtained in 0.01 and 0.007% yields respectively, characterisations of which are in progress.Full Text
- Andrographolide: the Active Principle of Kalmegh
Abstract Views :177 |
PDF Views:116
Authors
Affiliations
1 Botanical Survey of India, Calcutta, IN
1 Botanical Survey of India, Calcutta, IN
Source
Nelumbo - The Bulletin of the Botanical Survey of India, Vol 6, No 1 (1964), Pagination: 63-65Abstract
The paper gives a critical review of the chemistry of andrographolide, the active principle of Andrographis paniculata Nees, the common bitter popularly known as Kalmegh. It was isolated in 1911 and although the gross chemical nature as a trihydroxy diterpene lactone was known much earlier, it took more than fifty years for its complete elucidation.Full Text
- Triterpenoids II: β-Amyrin from Pithecellobium bigeminum Mart.
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PDF Views:111
Authors
Affiliations
1 Botanical Survey of India, Calcutta, IN
1 Botanical Survey of India, Calcutta, IN
Source
Nelumbo - The Bulletin of the Botanical Survey of India, Vol 5, No 1 (1963), Pagination: 91-91Abstract
β-amyrin has been isolated from the non-saponifiable fraction of leaves of Pithecellobium bigeminum Mart. in 0.01 % yield.Full Text
- Phytochemical Screening
Abstract Views :172 |
PDF Views:217
Authors
Affiliations
1 Botanical Survey of India, Calcutta, IN
1 Botanical Survey of India, Calcutta, IN
Source
Nelumbo - The Bulletin of the Botanical Survey of India, Vol 10, No 2 (1968), Pagination: 111-122Abstract
This is a report of preliminary screening of 202 plants belonging to 162 genera distributed over 64 natural orders wherein 47,25 and 51 rich sources of alkaloids, saponins and sterols respectively have been observed.Full Text