J. Appl. Cryst.の発刊に際して

Secondary metabolites of fungi from marine habitats.

Terpenes from marine-derived fungi show a pronounced degree of structural diversity, and due to their interesting biological and pharmacological properties many of them have aroused interest from synthetic chemists and the pharmaceutical industry alike. The aim of this paper is to give an overview of the structural diversity of terpenes from marine-derived fungi, highlighting individual examples of chemical structures and placing them in a context of other terpenes of fungal origin. Wherever possible, information regarding the biological activity is presented.

https://www.mdpi.com/1660-3397/8/8/2340/pdf

Terpenes from marine-derived fungi.

This work reviews the production of terpenoids by endophytic fungi and their biological activities, in period of 2006 to 2010. Sixty five sesquiterpenes, 45 diterpenes, five meroterpenes and 12 other terpenes, amounting to 127 terpenoids were isolated from endophytic fungi.

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Terpenoids from Endophytic Fungi

Macrocyclic host molecules with aromatic building blocks: the state of the art and progress

High-yield synthesis of a novel water-soluble macrocycle for selective recognition of naphthalene

Two dinuclear succinato-bridged nickel(II) complexes [Ni(RR-L)]2(μ-SA)(ClO4)2 (1) and [Ni(SS-L)]2(μ-SA)(ClO4)2 (2) (L = 5, 5, 7, 12, 12, 14-hexamethyl-1, 4, 8, 11-tetraazacyclotetradecane, SA = succinic acid) were synthesized and characterized by EA, Circular dichroism (CD), as well as IR and UV/Vis spectroscopy Single crystal X-ray diffraction analyses revealed that the NiII atoms display a distorted octahedral coordination arrangement, and the succinato ligand bridges two central NiII atoms in a bis bidentate fashion to form dimers in 1 and 2 The monomers of {[Ni(RR-L)]2(μ-SA)}2+ and {[Ni(SS-L)]2(μ-SA)}2+ are connected by O–H···O and N–H···O hydrogen bonds into a 1D right-handed and left-handed helical chain along the b axis, respectively The homochiral natures of 1 and 2 are confirmed by the results of CD spectroscopy

Synthesis and Crystal Structure of Two Succinato-Bridged Macrocyclic Nickel(II) Complexes

The reactions of a racemic four-coordinate Ni(II) complex [Ni(rac-L)](ClO4)2 with l- and d-alanine in acetonitrile/water gave two six-coordinate enantiomers formulated as [Ni(RR-L)(l-Ala)](ClO4)·2CH3CN (1) and [Ni(SS-L)(d-Ala)](ClO4) (2) (L = 5,5,7,12,12,14-hexamethyl-1,4,8,11-tetraazacyclo-tetradecane, Ala− = alanine anion), respectively. Evaporation from the remaining solutions gave two four-coordinate enantiomers characterized as [Ni(SS-L)](ClO4)2 (S-3) and [Ni(RR-L)](ClO4)2 (R-3), respectively. Single-crystal X-ray diffraction analyses of complexes 1 and 2 revealed that the Ni(II) atom has a distorted octahedral coordination geometry, being coordinated by four nitrogen atoms of L in a folded configuration, plus one carboxylate oxygen atom and one nitrogen atom of l- or d-Ala− in mutually cis-positions. Complexes 1 and 2 are supramolecular stereoisomers, constructed via hydrogen bonding between [Ni(RR-L)(l-Ala)]+ or [Ni(SS-L)(d-Ala)]+ monomers to form 1D hydrogen-bonded zigzag chains. The homochiral natures of complexes 1 and 2 have been confirmed by CD spectroscopy.

Chiral resolution of l- and d-alanine and a racemic macrocyclic nickel(II) complex: synthesis and crystal structures

Self-assembled macrocycle that binds polycyclic aromatic hydrocarbons

The title compound, [Co(C4H13N3)2][Co(CN)6]·2H2O, comprises one [Co(dien)2]3+ cation (dien is diethyl­ene­triamine), one [Co(CN)6]3− anion and two water molecules. The Co3+ atom of the [Co(dien)2]3+ cation is six-coordinated by six N atoms from two diethyl­enetriamine groups. The Co3+ atom of the [Co(CN)6]3− anion is six-coordinated by six C atoms from six cyanide ions. Neighboring cations and anions are connected by hydrogen bonds to each other and to the water molecules. The metal atoms lie on inversion sites.

Guang-Chuan Ou

Papers

High-yield synthesis of a novel water-soluble macrocycle for selective recognition of naphthalene

Synthesis and Crystal Structure of Two Succinato-Bridged Macrocyclic Nickel(II) Complexes

Chiral resolution of l- and d-alanine and a racemic macrocyclic nickel(II) complex: synthesis and crystal structures

Self-assembled macrocycle that binds polycyclic aromatic hydrocarbons

Bis(diethylenetriamine)cobalt(III) hexacyanocobaltate(III) dihydrate