Zobrazeno 1 - 10
of 22
pro vyhledávání: '"Alfonso G. Ober"'
Autor:
Alfonso G. Ober, José Castañeda-Acosta, Frank R. Fronczek, Nikolaus H. Fischer, Giacomo Chiari
Publikováno v:
Journal of Chemical Crystallography. 27:641-644
The heliangolide-class sesquiterpene lactone 8β-angeloyloxy-9α-acetoxycalyculatolide, C22H26O8,1, crystallizes in orthorhombic space groupP212121 witha=12.455(3),b=12.601(3),c=14.023(5) A,V=2200(1)A,3 Z=4.R=0.059 for 1735 observed data. The 11,13-d
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8e0c368429f426fefdffbb23fafffc2a
https://doi.org/10.1007/bf02576405
https://doi.org/10.1007/bf02576405
Publikováno v:
Spectroscopy Letters. 24:1353-1362
The molecular structure of septuplinolide from Calea septuplinerva was determined by single crystal X-ray diffraction analysis. This requires revision of stereochemistry at C4 from 4β-OH to 4α-OH in the septuplinolide molecule. Also, high-field 1H
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0cf25d747b3ce10b62d83579196a21bd
https://doi.org/10.1080/00387019108021766
https://doi.org/10.1080/00387019108021766
Publikováno v:
Journal of Natural Products. 50:604-611
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::840a4cd34cb634c96a0e9e20b24b9371
https://doi.org/10.1021/np50052a003
https://doi.org/10.1021/np50052a003
Publikováno v:
Phytochemistry. 24:795-799
Chemical analysis of Calea berteriana yielded, besides the known flavonoid acacetin and the sesquiterpene lactone calbertolide C, three new guaianolides, desacyl-8-tiglylsubcordatolide A and 8-epi-8-tiglylrupicolins A and B. C. prunifolia provided ac
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d92c6b4bce68ee09e9ef351ca48a2a9f
https://doi.org/10.1016/s0031-9422(00)84897-9
https://doi.org/10.1016/s0031-9422(00)84897-9
Publikováno v:
Phytochemistry. 23:1289-1292
Chemical analysis of Calea subcordata yielded three new guaianolides, 8-epi-isobutyrylrupicolin A, 8-epi-isobutyrylrupicolin B and subcordatolide A, which represent the first guaianolide-type sesquiterpene lactones reported in the genus Calea. The st
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9202a18206a122143a48b6aacd2e5947
https://doi.org/10.1016/s0031-9422(00)80443-4
https://doi.org/10.1016/s0031-9422(00)80443-4
Publikováno v:
Journal of Natural Products. 47:920-923
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::829e24804cb5b903e3b4e12328dfc519
https://doi.org/10.1021/np50036a002
https://doi.org/10.1021/np50036a002
Publikováno v:
Journal of Natural Products. 47:626-629
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2bac17a119395b578d3bdce7458263cb
https://doi.org/10.1021/np50034a010
https://doi.org/10.1021/np50034a010
Publikováno v:
Journal of Natural Products. 48:302-306
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1b8bcf87ca6c67a04a2a296c12b5230b
https://doi.org/10.1021/np50038a017
https://doi.org/10.1021/np50038a017
Publikováno v:
Phytochemistry. 25:877-881
Chemical analysis of Calea jamaicensis , the type species for the genus Calea , yielded in addition to a chromene and two flavonoids, four new sesquiterpene lactones, jamaicolides A-D, which include two guaianolides, a heliangolide, and a 12,8α-germ
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f86e2cc603f1b06e39760af5ca2e6aa9
https://doi.org/10.1016/0031-9422(86)80020-6
https://doi.org/10.1016/0031-9422(86)80020-6
Publikováno v:
Phytochemistry. 23:1439-1443
Calea trichomata gave in addition to four known 1β-hydroxy-8β-tigloyloxy-11(13)-eudesmen-6α, 12-olide derivatives a new heliangolide, 3-deoxy
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0abb32941d4e5cc4741207a65ad70162
https://doi.org/10.1016/s0031-9422(00)80482-3
https://doi.org/10.1016/s0031-9422(00)80482-3