Chemical composition of flavonoids and styrylpyrones and the genetic variability of isozymes in natural populations of Cryptocarya mandioccana Meisner (Lauraceae)

Moraes, Pedro Luís Rodrigues de; Nehme, Cláudia J.; Alves, Marcelo Corrêa; Derbyshire, Maria Teresa V. C.; Cavalheiro, Alberto José

doi:10.1016/j.bse.2006.10.013

Biochemical Systematics and Ecology

2007

DOI: 10.1016/j.bse.2006.10.013

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Chemical composition of flavonoids and styrylpyrones and the genetic variability of isozymes in natural populations of Cryptocarya mandioccana Meisner (Lauraceae)

Pedro Luís Rodrigues de Moraes

Cláudia J. Nehme

Marcelo Corrêa Alves³

et al.

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Cited by 7 publications

(1 citation statement)

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“…The genus Cryptocarya (Laureceae) comprises more than 350 species distributed in tropical and subtropical areas, including South Africa, Asia, Oceania, and South America . The biological profile of their secondary metabolites remains virtually underexplored.…”

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confidence: 99%

Catalytic Asymmetric Synthesis and Stereochemical Revision of (+)-Cryptoconcatone H

2017

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The total synthesis and structural revision of (+)-cryptoconcatone H are described. Guided by computational studies for the final structure assignment, the stereogenic centers at the tetrahydropyran moiety of (+)-cryptoconcatone H were assembled through catalytic asymmetric methodologies: Krische allylation, cross-metathesis reaction, and THP formation via Pd(II)-catalyzed cyclization. Finally, a Krische allylation reaction established the last stereocenter, and the lactone moiety was formed by ring-closing metathesis.

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confidence: 99%

Catalytic Asymmetric Synthesis and Stereochemical Revision of (+)-Cryptoconcatone H

2017

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Phenotypic Variations in the Foliar Chemical Profile of Persea americana Mill. cv. Hass

García‐Rodríguez

Torres-Gurrola

Meléndez-González

et al. 2016

Chemistry & Biodiversity

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The Hass avocado tree Persea americana cv. Hass was derived from a single hybrid tree of P. americana var. drymifolia and P. americana var. guatemalensis, and it is propagated clonally by grafting. This cultivar is the most widely planted in the world but its profile of secondary metabolites has been studied rarely despite of its importance in plant protection. We illustrate the variability of the volatilome of mature leaves by describing the average chemical composition and the phenotypic variability found in 70 trees. Contrary to the uniformity expected in the Hass cultivar, high variability coefficients were found for most of the 36 detected foliar volatile compounds; furthermore we found six chemotypes grouping the foliar phenotypes of the sampled trees using hierarchical cluster analysis. About 48% of trees were grouped in one chemotype; five chemotypes grouped the remaining trees. The compounds that determined these chemotypes were: estragole, α-farnesene, β-caryophyllene, germacrene D, α-cubebene and eugenol. This striking variation in a cultivar propagated clonally is discussed in terms of somatic mutation.

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Intraspecific variability of flavonoid glycosides and styrylpyrones from leaves of Cryptocarya mandioccana Meisner (Lauraceae)

Nehme

Moraes

Tininis

et al. 2008

Biochemical Systematics and Ecology

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Chemical composition of flavonoids and styrylpyrones and the genetic variability of isozymes in natural populations of Cryptocarya mandioccana Meisner (Lauraceae)

Cited by 7 publications

References 16 publications

Catalytic Asymmetric Synthesis and Stereochemical Revision of (+)-Cryptoconcatone H

Catalytic Asymmetric Synthesis and Stereochemical Revision of (+)-Cryptoconcatone H

Phenotypic Variations in the Foliar Chemical Profile of Persea americana Mill. cv. Hass

Intraspecific variability of flavonoid glycosides and styrylpyrones from leaves of Cryptocarya mandioccana Meisner (Lauraceae)

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