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Dive into the research topics where Carlos Fernandez is active.

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Featured researches published by Carlos Fernandez.


Tetrahedron Letters | 2002

Vitamin D heterocyclic analogues. Part 1: A stereoselective route to CD systems with pyrazole rings in their side chains

Yagamare Fall; Candida Barreiro; Carlos Fernandez; Antonio Mouriño

Efficient preparation of two vitamin D CD ring system synthons with pyrazole rings in their side chains is based on the formation of the pyrazole ring from an α-acetylenic ketone.


Knowledge Management Research & Practice | 2014

Critical elements for product innovation at Portuguese innovative SMEs: an intellectual capital perspective

Ricardo Costa; Carlos Fernandez; Pedro Figueroa Dorrego

The general purpose of this research is to study interaction effects between intangible assets and product innovation. More specifically, the authors build on the intellectual capital-based view of the firm and new product development perspectives to analyse which intellectual capital elements affect product innovation performance at innovative small and medium enterprises (SMEs) from Portugal, and what are their interdependencies, if any, in that process. The findings confirm that intellectual capital does influence product innovation performance at Portuguese innovative SMEs. However, not all intellectual capital elements that were identified for the purpose of this research show such a relevant effect. In fact, only three elements, coming, respectively, from human, relational and structural capital, effectively reveal a significant impact on product innovation performance. Those are ‘Commitment to the Product Innovation Process’, ‘Vertical Relationships’ and ‘Product Innovation Management and Strategy’. In addition, only structural capital elements exhibit a significant direct impact on product innovation success. Human capital and relational capital elements affect product innovation indirectly, through their interaction with structural capital. Our findings contribute to a better understanding of the impact of intellectual capital elements on product innovation at SMEs, providing more evidence on which to build an intellectual capital-based view of corporate phenomena.


Tetrahedron Letters | 1999

METHOXYALLENE, A BUILDING BLOCK FOR THE SYNTHESIS OF SEVEN-MEMBERED OXACYCLES

Yagamare Fall; Generosa Gómez; Carlos Fernandez

Abstract An efficient new approach for the synthesis of seven-mem bered oxacycles is described.


Tetrahedron Letters | 2000

Stereoselective synthesis of vitamin D3 analogues with cyclic side chains

Yagamare Fall; Carlos Fernandez; Cristian Vitale; Antonio Mouriño

Abstract The synthesis of a new class of vitamin D analogues having a cyclic side chain is described. Readily available starting material, a short sequence with high yielding steps are key features of the synthesis. Alcohols 12c and 12d were readily separable by flash chromatography and the stereochemistry at C22 was established unambiguously by X-ray diffraction analysis of 12c .


Tetrahedron Letters | 2001

A key intermediate for the convenient synthesis of series of vitamin D3 analogues with modified side chains

Yagamare Fall; Carlos Fernandez; Victoria González; Antonio Mouriño

Abstract Tosylate 1 , which features the vitamin D triene unit, was stereoselectively synthesized from commercially available starting materials. This key intermediate undergoes a very efficient one-pot, two-step reaction with tetrabutyl ammonium fluoride to afford vitamin D analogue 2 , which bears a cyclic side chain. Reaction of 1 with lithium aluminium hydride and removal of the silyl protecting groups affords the 22-methylated vitamin D analogue 3 .


Synthesis | 2005

OCT Analogues Part 2. Acetylene in the Synthesis of Useful Building Blocks for Analogues of OCT Modified at C-20, C-21, and the D-Ring

Carlos Fernandez; Ousmane Diouf; Edelmiro Momán; Generosa Gómez; Yagamare Fall

Diols 11 and 12, potential building blocks for the synthesis of 20-epi-OCT, and analogues modified at C-21 and the D-ring, were efficiently synthesized using Pd(II)-catalyzed oxidative rearrangement of propargylic acetate7.


Synlett | 2005

Design and Synthesis of Novel 20-epi Analogues of Calcitriol with Restricted Side Chain Conformation

Carlos Fernandez; Generosa Gómez; Carmen Lago; Edelmiro Momán; Yagamare Fall

The design and efficient preparation of two 20-epi analogues of calcitriol with restricted side chain conformation is described. The formation of the tetrahydropyran ring was achieved via zinc chloride mediated etherification of alcohols. Docking experiments show that these novel analogues could be interesting synthetic targets.


Intangible Capital | 2008

Evaluación y relaciones entre las dimensiones del capital intelectual: El caso de la cadena de la madera de Oberá (Argentina)

María Susana Martos; Carlos Fernandez; Pedro Figueroa Dorrego


Synlett | 2001

Stereoselective Synthesis of (22R)- and (22S)-22-Methyl-1α,25-Dihydroxyvitamin D3

Yagamare Fall; Carlos Fernandez; Victoria González; Antonio Mouriño


5th European Conference on Intellectual Capital | 2013

The Influence of Relational Capital on Product Innovation Performance at Innovative SMEs

Pedro Figueroa Dorrego; Ricardo Costa; Carlos Fernandez

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Antonio Mouriño

University of Santiago de Compostela

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