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    • Zilber's Dichotomy for Differentially Closed Fields with an Automorphism 

      Bustamante Medina, Ronald F. (2020-07-01)
      The theory of difference-differential fields of characteristic zero hasa model-companion denoted byDCFA. In [2] we prove its main properties. In[3] we proved a weak version of Zilber’s dichotomy forDCFA. In this paperwe ...

    • ZOOTROPHION Luer 

      Pupulin, Franco; Rojas Alvarado, Gustavo (2022-08)
      Se presenta una reseña del género Zootrophion en Costa Rica y se incluyen fotografías de todas las especies presentes en el país. Además se describe una nueva especie para el país.

    • Zygopetalinae novae et criticae (Orchidaceae) 

      Pupulin, Franco (2019)
      The new genus Pridgeonia, and eight new orchid species in the genera Benzingia, Daiotyla, Dichaea, Ixyophora, and Pridgeonia, all belonging to the subtribe Zygopetalinae, are described. Complete descriptions, with notes ...

    • (+)-α-copaen-8-one and other constituents from Neomirandea species 

      Tamayo Castillo, Giselle; Jakupovic, Jasmin; Castro Araya, Víctor H.; King, Robert M. (1989)
      The investigation of five Neomirandea species gave two known entclerodanes, a heliangolide, a cadinene and a new copaene derivative as well as some widespread compounds.

    • β-Carboline monoterpenoid glucosides from Palicourea adusta 

      Valverde, Johnny; Tamayo Castillo, Giselle; Hesse, Manfred (1999)
      Lyaloside, a monoterpenoid glucoindole alkaloid, was isolated from the leaves of Palicourea adusta together with a mixture of its hydroxycinnamic acid derivatives, (E)-O-(6′)-cinnamoyl-4″-hydroxy-3″-methoxy-lyaloside and ...

    • μ2-Chlorido-chlorido­(μ2-4-{[2-(di­ethyl­amino)­eth­yl]imino}­pent-2-en-2-olato)bis­(tetra­hydro­furan-κO)cobalt(II)lithium 

      Vinocour Pacheco, Felipe Andrés; Soto Navarro, Andrea; Pineda Cedeño, Leslie William (2018)
      The crystal structure of the title compound, [CoLi(C11H21N2O)Cl2(C4H8O)2], has monoclinic symmetry and comprises one heterometallic binuclear complex mol­ecule in the asymmetric unit. The Co2+ cation is bonded to one oxygen ...