Myrocarpus emarginatus (Leguminosae, Papilionoideae, Sophoreae), a new species from Bolivia

Myrocarpus emarginatus, known only from Bolivia, is described and illustrated. Its diagnostic characters are the emarginate leaflet apex, pellucid dots and streaks immersed on the leaflet blades, and the areolate reticulation of the seed chamber. The new species is morphologically similar to Myrocarpus fastigiatus Allemao, especially in the shape of its leaflets, ranging from elliptic to oblong; neither species exhibits leaflets with an acuminate apex.11335335

A new species of Tephrosia (Leguminosae-Papilionoideae-Millettieae) from Misiones, Argentina

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)A new species of Tephrosia endemic to Argentina is described and illustrated. Tephrosia fertilis has affinities with T. adunca, based on the type and colour of indumentum, but differs in the relative length of pedicel to bracts, calyx indumentum, presence of a callus and the absence of secretory structure on the standard petal.13114144Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)CNPq [563550/2010-4, 201550/2010-5

A new species of Mucuna Adans. (Leguminosae, Papilionoideae, Phaseoleae) from southeastern Brazil, with a key to Brazilian species

A new species, Mucuna japira A. M. G. Azevedo, Agostini & Sazima, is described from Brazil. It has features similar to M. sloanei Fawc. & Rendle, but has pseudo-racemose inflorescences and the standard petal measures (3)/(4)of the length of the keel, whereas M. sloanei has umbellate inflorescences and the standard petal measures (1)(/)2 of the length of the keel. This new species is restricted to the Atlantic forest of coastal Sao Paulo, Southeastern Brazil. A key to Brazilian species is provided.54245145

Mucuna jarocha (Leguminosae-Papilionoideae-Phaseoleae), a new species from Mexico

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Mucuna jarocha, a new species of Mucuna endemic to Mexico, is here described and illustrated. It is similar to M. holtonii, but the wing petals are shorter than the standard in M. holtonii and longer than the standard in this new species.8914346Shirley A. Graham Fellowship in Systematic Botany and Biogeography of the Missouri Botanical GardenCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Fundação de Amparo à Pesquisa do Estado do Rio de Janeiro (FAPERJ)Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)CAPES [4627-11-3]FAPESP [2012/04635-8]CNPq [563550/2010-4]CNPq [312766/2009-2]FAPERJ [E-26/110.331/2012

Prenylated flavonoids from Deguelia hatschbachii and their systematic significance in Deguelia

Chemical investigation of dichloromethane and petrol extracts from the roots of D. hatschbachii A. M. G. Azevedo furnished thirteen compounds from which five are described for the first time and their structures were determined to be 3-(4 ' -hydroxyphenyl)-5-methoxy-6-(3,3-dimethylallyl)2 ' ,2 ' -dimethylchromene-(5 ' ,6 ' :8,7)-3-(propyl-2-one)-4H-1-benzo-2,3-dihydropyran-2,4-dione; 6,4 ' -dihydroxy-3-(3,3-dimethylallyl)-2 ' ,2 ' -dimethylchromene (5 ' ,6 '. 5,4)-2-methoxy deoxybenzoin; 6,4 ' -dihydroxy-3-(3,3-dimethylallyl)-2 ' ,2 ' -dimethylchromene (5 ' ,6 ' :5,4)-2-methoxy-8-(propyl-2-one) deoxybenzoin; 6-(3,3-dimethylallyl)-2 ' ,2 ' -dimethylchromene (5 ' ,6 ' :4,5)-4 ' -hydroxy-3-methoxy stilbene and 3,5-dimethoxy-4 ' -hydroxy-4-(3,3-dimethylallyl) stilbene by spectral analysis (UV, IR, MS and 1D- and 2D- NMR experiments). The root extracts and some isolated compounds were bioactive, as revealed by bioautography and brine shrimp lethality assays. (C) 2001 Elsevier Science Ltd. All rights reserved.571778

Swartziarboreol diterpenes from Swartzia langsdorffii raddi

Two new swartziarboreol diterpenes (1 and 2) and swartziarboreol C were isolated from the petroleum ether extract of the roots of Swartzia langsdorffii. Their structures were elucidated by spectroscopic evidence. The biological activity of the root extracts and 2 was evaluated through bioautography and brine shrimp lethality assays.6881290129

Three new species of Mucuna (Leguminosae: Papilionoideae: Phaseoleae) from South America

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Three new species of Mucuna from South America are described and illustrated. All present a morphological characteristic that is restricted to some neotropical species of this genus: a condensed primary inflorescence axis, with all the flowers closely inserted at the inflorescence apex. M. argentea occurs in Colombia, Ecuador and Peru, M. klitgaardiae in Ecuador and Peru, whilst M. cajamarca is endemic to Peru. These three new species highlight the diversity and high endemism of Mucuna in South America.681143150IAPT (International Association of Plant Taxonomy)Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Fundação de Amparo à Pesquisa do Estado do Rio de Janeiro (FAPERJ)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Rupert Barneby Award programme of The New York Botanical GardenFAEPEX UNICAMP [43211]Shirley A. Graham fellowships in Systematic Botany and Biogeography of Missouri Botanical GardenCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)CAPES [4627-11-3]FAPERJ [E-26/110.331/2012]CNPq [563550/2010-4]FAPESP [2010/52488-9]FAEPEX UNICAMP [43211

Chromosome numbers in Brazilian species of Crotalaria (Leguminosae, Papilionoideae) and their taxonomic significance

Chromosome numbers were counted for 23 species of Crotalaria native to Brazil. Among these data there were new counts for 15 taxa, and some confirmed previous reports or represented numbers that were different from those cited previously. The chromosome numbers most frequently found were 2n = 16 and 2n = 32. Only C. incana L. had 2n = 14 and C. tweediana Benth. had 2n = 54. The counts 2n = 32 and 54 were found in species of section Calycinae and 2n = 16 and 14 in species of section Chrysocalycinae. The data revealed the importance of chromosomal parameters in the characterization of sections Calycinae and Chrysocalycinae in Brazil. We discuss the systematic significance and evolutionary aspects for the genus, comparing the results with the two sections that are native in Brazil. (c) 2006 The Linnean Society of London, Botanical Journal of the Linnean Society.151227127

Twenty-three flavonoids from Lonchocarpus subglaucescens

Chemical investigation of Lonchocarpus subglaucescens roots resulted in the isolation of 23 flavonoids, whose structures were elucidated by spectroscopic methods. Ponganone III, ovalichromene B, purpurenone, 12 alpha-hydroxyrotenone, (2,3-trans-3,4-trans)-3,4,5,8-tetramethoxy-[2 ',3 ':7,6]-furanoflavan, 6 ',6 '-dimethylchromeno-[2 ',3 ':7,8]-flavone and 3',4'-methylenedioxy-6 ',6 '-dimethylchromeno-[2 ',3 ':7,8]-flavone had been previously isolated from other sources. The 16 new flavonoids are 6-methoxy-6 ',6 '-dimethylchromeno-[2 ',3 ':7,8]-flavanone, (2S)-5,6-dimethoxy-[2 ',3 ':7,8]-furanoflavanone, (2R,3R)-3,5,6-trimethoxy-[2 ',3 ',7,8]- furanoflavanonol, 3,4-methylenedioxy-2'-methoxy-6 ',6 '-dimethylchromeno-[2 ',3 ':4',3']-beta-hydroxychalcone, (Z/E)-3,4-methylenedioxy-2'-methoxy-6 ',6 '-dimethylchromeno-[2 ',3 ':4',3']-beta-methoxychalcone, (E)-2'-methoxy-6 ',6 '-dimethylchromeno-[2 ',3 ':4',3']-9-methoxychalcone, (2,4-cis)-3',4'-methylenedioxy-4,5,8-trimethoxy-[2 ', 3 ':7,6]-furanoflavan, (2,4-cis)-4,5,6-trimethoxy-[2 ',3 ': 7,8]furanoflavan, 3,4-dimethoxy-2'-hydroxy-6 ',6 '-dimethylchromeno-[2 ',3 ':4',3']-chalcone, 3,4-methylenedioxy-2'-hydroxy-3',6'-dimethoxy-[2 ',3 ':4',5']-furanochalcone, (2,3-trans-3,4-cis-3,4,5,6-tetramethoxy-[2 ',3 ':7,8]-furanoflavan, (2,3-trans-3,4-trans)-3',4'-methylenedioxy-3,4,5,8-tetramethoxy-[2 ',3 ':7,6]-furanoflavan, (2,3-trans-3,4-cis)-3',4'-methylenedioxy-3,4,5,6-tetramethoxy- [2 ',3 ':7,8]-furanoflavan, 3,4-methylenedioxy-2'-methoxy-[2 ',3 ': 4',3']-dihydrochalcone and 3',4'-methylenedioxy-8-methoxy-5-hydroxy-6 ',6 ':7,6]-isoflavone.4251459147

Dihydroflavonols and flavanones from Lonchocarpus atropurpureus roots

From the petroleum extract of Lonchocarpus atropurpureus Benth. roots, 5,2'-dihydroxy-3-methoxy-6,7-(2',2'-dimethylchromene)-8-(3',3'-dimethylallyl)-flavanone and 2',3,5-trihydroxy-6,7-(2',2'-dimethylchromene)-8-(3',3'-dimethylallyl)-flavanone were isolated, together with three known flavonoids and a mixture of two pentacyclic triterpenes. Their molecular structures were determined by spectral analyses (UV, IR, MS and 1D- and 2D-NMR experiments). (C) 1999 Elsevier Science Ltd. All rights reserved.5281681168