Zobrazeno 1 - 10
of 92
pro vyhledávání: '"L. Ramachandra Row"'
Publikováno v:
Phytochemistry. 17:1647-1650
Physalins F and J are shown to be Physalin B 5β,6β-epoxide and 5α,6α-epoxide, respectively. The transformation of physalin F into physalin D (5,6-dihydro-5α,6β-dihydroxyphysalin B) and an acid-catalysed skeletal rearrangement of physalin F into
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::00a9cb19ccbd4a417915e66870b9b492
https://doi.org/10.1016/s0031-9422(00)94660-0
https://doi.org/10.1016/s0031-9422(00)94660-0
Autor:
Andrew Pelter, V.Kameswara Rao, A.Madhusudhana Rao, Robert S. Ward, L. Ramachandra Row, Ammanamanchi S. R. Anjaneyulu
Publikováno v:
Tetrahedron. 33:133-143
The structures of six new lignans isolated from the heartwood of Gmelina arborea have been determined. They are 6“ - bromo - isoarboreol, 4 - hydroxysesamin, 4,8 - dihydroxysesamin, 1,4 - dihydroxysesamin (gummadiol), 2 - piperonyl - 3 - hydroxymet
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3a3ef9f4165d605d77819540679e8488
https://doi.org/10.1016/0040-4020(77)80444-4
https://doi.org/10.1016/0040-4020(77)80444-4
Publikováno v:
Phytochemistry. 17:1641-1645
From the stems and leaves of Physalis angulata and P. lancifolia, the isolation of five new physalins E, F, G, H and I is reported. The structures of physalins E and H are established respectively as 5,6-dihydro-5α,7α-dihydroxy and 7β-hydroxy deri
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fab6eec828885314c5f3a28c85d20a9d
https://doi.org/10.1016/s0031-9422(00)94659-4
https://doi.org/10.1016/s0031-9422(00)94659-4
Autor:
Revuru Venkateswarlu, Robert S. Ward, Andrew Pelter, L. Ramachandra Row, Ammanamanchi S. R. Anjaneyulu, P. Atchuta Ramaiah
Publikováno v:
Tetrahedron. 37:3641-3652
The isolation and characterisation of five new compounds and nine known compounds from the heartwood of Cleistanthus collinus are reported. The new compounds are wodeshiol 16 ,3,4-dihydrotaiwanin C 20 , and three new glycosides 24 , 25 and 26 of diph
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ee939ece4902a2034a5196c0ea6f8b1a
https://doi.org/10.1016/s0040-4020(01)98893-3
https://doi.org/10.1016/s0040-4020(01)98893-3
Autor:
Ammanamanchi S. R. Anjaneyulu, L. Ramachandra Row, V.Kameswara Rao, Andrew Pelter, Robert S. Ward, A.Madhusudhana Rao
Publikováno v:
Tetrahedron Letters. 16:1803-1806
Gummadiol, a new lignan from Gmelina arborea, is shown to be 1,4-dihydroxy-2, 6-dipiperonyl-3, 7-dioxabicyclo-[3, 3, 0]-octane, the first member of a new series of dihydroxy lignans.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4ea1eda83c061027c73c582d0e2f65cc
https://doi.org/10.1016/s0040-4039(00)75261-0
https://doi.org/10.1016/s0040-4039(00)75261-0
Autor:
A.Madhusudhana Rao, Ammanamanchi S. R. Anjaneyulu, L. Ramachandra Row, Robert S. Ward, Andrew Pelter, V.Kameswara Rao
Publikováno v:
Tetrahedron Letters. 16:4697-4700
A new lignan from Gmelina arborea is shown to be 1, 2a-dihydroxy-2e-piperonyl-6e-(6″-bromopiperonyl)-3, 7-dioxabicyclo-[3,3,0]-octane, the first example of a bromine containing lignan.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f331f98d173532f260ca636ba2457459
https://doi.org/10.1016/s0040-4039(00)91055-4
https://doi.org/10.1016/s0040-4039(00)91055-4
Autor:
Robert S. Ward, Ammanamanchi S. R. Anjaneyulu, K.Jaganmohan Rao, L. Ramachandra Row, Andrew Pelter, V.Kameswara Rao, C. Subrahmanyam
Publikováno v:
Tetrahedron. 31:1277-1285
Five new lignans isolated from Gmelina arborea Linn have been characterised. The parent compound arboreol, is 2a,6e-dipiperonyl-1e,2e-dihydroxy-3,7-dioxabicyclo-[3,3,0]-octane. It is accompanied by its 2-O-methyl ether, the 2-O-ethyl ether and its 2-
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8dbb56b45f40bd9dcb6df85117a73320
https://doi.org/10.1016/0040-4020(75)80169-4
https://doi.org/10.1016/0040-4020(75)80169-4
Autor:
Andrew Pelter, L. Ramachandra Row, Robert S. Ward, Ammanamanchi S. R. Anjaneyulu, P. Atchuta Ramaiah
Publikováno v:
Tetrahedron Letters. 16:2961-2964
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::367aa6a02e24cdcf7ee5f59e8719e6f0
https://doi.org/10.1016/s0040-4039(00)75044-1
https://doi.org/10.1016/s0040-4039(00)75044-1
Publikováno v:
Tetrahedron Letters. 20:3043-3046
A revised structure for hypophyllanthin is proposed on the basis of its 13C n.m.r. spectrum. 13C n.m.r. spectra also support the previously proposed structure for nirtetralin and assist in the structural elucidation of a new aryltetralin lignan.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::05fadda152ca0eb17ed898a1c4598631
https://doi.org/10.1016/s0040-4039(00)71008-2
https://doi.org/10.1016/s0040-4039(00)71008-2
Publikováno v:
Phytochemistry. 23:427-430
A new withanolide, named pubescenol, and also physalin E and physalin E acetate have been isolated from Physalis pubescence . The structure of pubescenol is assigned as 4α,7α-dihydroxy-l-oxo-24α,25α-epoxy-2,3-dihydrowithanolide.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::13678aaea14ee28bbb710c67f32a4414
https://doi.org/10.1016/s0031-9422(00)80345-3
https://doi.org/10.1016/s0031-9422(00)80345-3