Zobrazeno 1 - 10
of 60
pro vyhledávání: '"Sasanka Chandra Bhattacharyya"'
Publikováno v:
Tetrahedron. 22:1917-1927
β-Bergamotene, in Indian valerian root oil, is a sesquiterpene analogue of β-pinene. Its structure has been established as I by application of physical methods and chemical degradations to known compounds, pinane (XXIX) and bicycloekasantalic lacto
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4cd8cdd00f3a322e61987901fdfa5cb8
https://doi.org/10.1016/s0040-4020(01)82265-1
https://doi.org/10.1016/s0040-4020(01)82265-1
Publikováno v:
Tetrahedron. 20:1289-1300
Two new sesquiterpenes, hydroxyvaleranone and its acetyl derivative, have been isolated from Indian valerian root oil (Valeriana wallichi). On the basis of NMR spectral results along with other spectroscopic, analytical and chemical data, structure I
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3a7895103257c5ba496cdadcbcbe11c7
https://doi.org/10.1016/s0040-4020(01)98993-8
https://doi.org/10.1016/s0040-4020(01)98993-8
Publikováno v:
Tetrahedron. 23:1993-1996
The ‘costol’ fraction of costus root oil is an intimate mixture of several alcohols. The presence of “true” costol (I) has been proved by conversion to crystalline costic acid (IB), the methyl ester of which on reduction with LAH-AlCl 3 gives
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::62a7058241d693f919f38d333f832902
https://doi.org/10.1016/s0040-4020(01)82603-x
https://doi.org/10.1016/s0040-4020(01)82603-x
Publikováno v:
Tetrahedron. 21:637-644
By analogy with ω-bromocamphene, ω-bromolongifolene on fusion with alkali, but at a comparatively higher temperature, gives several monomeric and dimeric products as a result of ring enlargement. The monomeric products have been characterized as lo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::18585867ae679c89098514a01846fb2f
https://doi.org/10.1016/s0040-4020(01)82234-1
https://doi.org/10.1016/s0040-4020(01)82234-1
Publikováno v:
Tetrahedron. 22:2861-2868
Two new pentacyclic triterpenes of the taraxastane group have beenisolated from Canarium strictum Roxb. One is a ketol and the other a diol. Chemical evidence, IR, UV, NMR spectra and their mass spectral disintegration patterns show that they are rep
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::47fc3d0a1ccbb2606dc548105e6f98d4
https://doi.org/10.1016/s0040-4020(01)99077-5
https://doi.org/10.1016/s0040-4020(01)99077-5
Publikováno v:
Tetrahedron. 20:2903-2909
Both liquid and solid hexahydrocostunolides obtained by the pressure hydrogenation of costunolide (V) and solid dihydrocostunolide (VI) respectively, give the same optically active hexahydrogermacol (IIIa), when subjected to controlled reduction with
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fd7aab275d3104a765658b1f3f73585f
https://doi.org/10.1016/s0040-4020(01)98511-4
https://doi.org/10.1016/s0040-4020(01)98511-4
Publikováno v:
The Journal of Organic Chemistry. 29:2245-2248
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4ed859f5823c6ee881426df4449283b2
https://doi.org/10.1021/jo01031a033
https://doi.org/10.1021/jo01031a033
Publikováno v:
Tetrahedron. 9:275-283
Costunolide, the new sesquiterpene lactone isolated from costus root oil (Saussurea lappa Clarke) is shown to have the structure I on the basis of dehydrogenation, ozonolyses and the formation of santanolide 'C' under mild conditions.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7d23324a442f6a299ee6ff454b322a36
https://doi.org/10.1016/0040-4020(60)80017-8
https://doi.org/10.1016/0040-4020(60)80017-8
Publikováno v:
Tetrahedron. 21:1537-1540
Hexadec-7-enedioic acid and the corresponding saturated acid have been prepared from aleuritic acid in good yield and subsequently cyclized to the respective acyloins, which in the form of acetates were reduced with calcium in liquid ammonia to furni
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::800ce20cb075c6ac8dc3c635127801db
https://doi.org/10.1016/s0040-4020(01)98317-6
https://doi.org/10.1016/s0040-4020(01)98317-6
Publikováno v:
Tetrahedron. 20:2601-2604
A simple synthesis of (−)-muscone has been developed by using citronellal and oleyl alcohol as the starting materials.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2a476c73df3e49971148c5d702b8fa10
https://doi.org/10.1016/s0040-4020(01)90838-5
https://doi.org/10.1016/s0040-4020(01)90838-5