Minor oplopanes from Senecio mexicanus

Joseph‐Nathan, Pedro; Villagómez, J.Roberto; Rojas-Gardida, Mirna; Román, Luisa U.; Hernández, José Falcón

doi:10.1016/s0031-9422(00)97991-3

Cited by 13 publications

(4 citation statements)

References 9 publications

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“…Their structures were identified as (14 R )- β -oplopenol ( 1 ) and (14 S )- β -oplopenol ( 2 ). The retention indice ( I Rtx-1 ), EI-mass spectra, 1 H- and 13 C-NMR spectral data of β -oplopenone ( 3 ) were in agreement with those reported in the literature [ 10 , 11 , 12 , 13 , 14 , 15 , 16 ]. Those of compounds 1 and 2 are compiled in Table 1 and Table 2 .…”

Section: Resultssupporting

confidence: 89%

Spectral Data of Two New Asymmetric Sesquiterpene Alcohols: (14R)-β-Oplopenol and (14S)-β-Oplopenol

et al. 2008

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Section: Resultssupporting

confidence: 89%

Spectral Data of Two New Asymmetric Sesquiterpene Alcohols: (14R)-β-Oplopenol and (14S)-β-Oplopenol

et al. 2008

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“…The presence of oplopanes in the genus Robinsonecio may have chemosystematic significance. Nevertheless, it is important to mention that this kind of compounds have been isolated from Roldana mexicana (Table 3) [60][61][62] and from several species of Senecio such as S. ovirensis (111a-b) [63] and S. kleinia (112a-b) [64].…”

Section: Genus Robinsoneciomentioning

confidence: 99%

“…The results obtained from nine Mexican Roldana species, mainly of the roots, are shown in table 3. [68,69] 64b 118-120a-b, 136a-b R. ehrenbergiana roots [75,76] 137a-b-139a-b leaves [75] 47h,140 flowers [76] 136a-b R. heterogama roots [77] 81,83b,91,124b, 141a-b R. lineolata roots [78,79] 48b,48d,49k,49n aerial parts [78] 47i-j,136a-b R. mexicana roots [60,61] 142-146 leaves [629] 142a-b,144,147 R. sessilifolia roots [70][71][72] 103,104a-c,121a-c 47h R. sundbergii aerial parts [23] 51a,130,131,148…”

Section: Genus Roldanamentioning

confidence: 99%

Secondary Metabolites from Mexican Species of the Tribe Senecioneae (Asteraceae)

et al. 2020

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Abstract. A revision of the Mexican species belonging to the tribe Senecioneae chemically studied so far, shows that the genera Senecio and Packera (subtribe Senecioninae), and the genera Barkleyanthus, Pittocaulon, Psacalium, and Telanthophora (subtribe Tussilagininae) contain pyrrolizidine alkaloids (PAs) and eremophilane derivatives as their main secondary metabolites. However, from Roldana and Robinsonecio (subtribe Tussilagininae) no PAs have been isolated. A special case is the genus Pseudogynoxys in which neither PAs nor eremophilanes are reported. Resumen. Una revisión de las especies mexicanas de la tribu Senecioneae estudiadas químicamente hasta el momento, muestra que los géneros Senecio y Packera (subtribu Senecioninae), y los géneros Barkleyanthus, Pittocaulon, Psacalium y Telanthophora (subtribu Tussilagininae) contienen alcaloides pirrolizidínicos (APs) y derivados de eremofilano como sus metabolitos secundarios principales. Sin embargo, de Roldana y Robinsonecio (subtribu Tussilagininae) no se han aislado APs. Un caso especial es el género Pseudogynoxys para el cual no se han reportado ni APs ni eremofilanos.

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“…~ Other compounds of this type ( 138)-(142) has been obtained from Senecio me~icanus."~. 115 The volatile fraction of Otacan-…”

Section: Chamigrane and Rhodolauranementioning

confidence: 99%

Natural sesquiterpenoids

Fraga¹

1992

Nat. Prod. Rep.

132

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The production of trans-p-farnesene by callus cultures of Humulus lupulus has been carried 0ut.l The insect juvenile hormone JH-I11 (1) and methyl (2E, 625')-farnesoate have been isolated from the Malaysian plant Cyprus iria. The JH-111, obtained from this plant, has the same 10R configuration as that found in insect species and may constitute a new plant defence mechanism against insects.2 The nerolidol derivatives (2)-( 6) have been isolated from Geigeria ~r n a t i v a . ~The aerial part of CaIea crocinervosa contains the novel tris-nor sesquiterpene lactone crocinervolide (7). 4 The structure of a new bis-butenolide obtained from a species of the genus Eremophila has been determined as (8).5 Two new indolosesquiterpenes C02Me (3) R' = H, R~ = Oval' (4) R' = OGlcAc, R2 =H (5) R' = OClc(Ac),, R2 = H 0 J2-P (7) Ang = k q ; Epang= %q0 ; Meacr= %,,, ; Mebu = % . ; 217 220 NATURAL PRODUCT REPORTS, I992 (59) (60) R = 0 (61) R = OH, H (64) R=a-OH (65) R=P-OH (67) R=CH,OH (69) (68) R = CHO, A2(3) (71) R=C02Me (72) R = CH,O(CO)

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Minor oplopanes from Senecio mexicanus

Cited by 13 publications

References 9 publications

Spectral Data of Two New Asymmetric Sesquiterpene Alcohols: (14R)-β-Oplopenol and (14S)-β-Oplopenol

Spectral Data of Two New Asymmetric Sesquiterpene Alcohols: (14R)-β-Oplopenol and (14S)-β-Oplopenol

Secondary Metabolites from Mexican Species of the Tribe Senecioneae (Asteraceae)

Natural sesquiterpenoids

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