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  • 1
    Electronic Resource
    Electronic Resource
    Accurate mapping of the Escherichia coli pepD gene by sequence analysis of its 5′ flanking region (1989)
    Springer
    Molecular genetics and genomics 215 (1989), S. 369-373 
    Details
    ISSN: 1617-4623
    Keywords: pepD gene ; gpt gene ; Intergenic region ; lpcA locus ; Peptidase D purification
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary A cloned DNA fragment, carrying the gene for peptidase D (pepD) of Escherichia coli, was partially sequenced. By purification of peptidase D and sequence determination of an amino-terminal oligopeptide the reading frame of the pepD gene, starting with a GTG initiator codon, was unambiguously identified. An overlap of the established nucleotide sequence with the previously sequenced 5′ flanking region of the gpt gene allowed the exact distance between pepD and gpt to be calculated. The two genes are pointing towards each other and are separated by 260 bp. A search for open reading frames (ORFs) and the analysis of possible codon usage in the intercistronic region indicate the absence of an additional gene (lpcA) between pepD and gpt.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00427031
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  • 2
    Electronic Resource
    Electronic Resource
    Thieno[3,4-f]-2,1-benzisothiazol.  -  Synthese und physikalische Eigenschaften eines neuen kondensierten 14π-Heteroarens sowie dessen thermisches Cycloadditions-verhalten gegenüber N,N-Doppelbindungssystemen (1986)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 119 (1986), S. 3158-3164 
    Details
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Thieno[3,4-f]-2,1-benzisothiazole.  -  Synthesis and Physical Properties of a Novel Fused 14π Heteroarene as well as its Thermal Cycloaddition Reactions with N,N-Double Bond SystemsThe synthesis of the novel condensed title compound 2, which contains three masked dipolar systems, as well as its cycloaddition reactions with 1,2,4-triazoline-3,5-diones 3a, b and azo-dicarboxylic esters 5a, b with formation of 4 and 6, respectively, are described.
    Notes: Die Darstellung der neuen kondensierten Titelverbindung 2, die drei maskierte dipolare Systeme beinhaltet, sowie deren Cycloadditionen an 1,2,4-Triazolin-3,5-dione 3a, b und Azo-dicarbonester 5a, b unter Bildung von 4 bzw. 6 werden beschrieben.
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19861191023
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  • 3
    Electronic Resource
    Electronic Resource
    Pyrrolo[1,2-b]-1,3,4-thiadiazol-Derivate aus mesomeren Heteropentalenen und Azodicarbonestern (1988)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 121 (1988), S. 95-104 
    Details
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Pyrrolo[1,2-b]-1,3,4-thiadiazole Derivatives from Mesomeric Heteropentalenes and Azodicarboxylic EstersThe mesomeric heteropentalene betaines of type 4, 7, and 18 display an unusual reaction behavior against the azodicarboxylic esters 8a-c. Surprisingly, 4 reacts with 8a, b to produce 17a, b, whereas the reaction of 4 with 8c leads to 11 and the novel azomethine imine 15. Also the reaction of 18 with 8a-c gives in two cases 20 or 25 beside the azomethine imine 19. Furthermore, 7 reacts with 8a to form 26, whereas the reaction of 7 with 8c surprisingly yields 29. Spectroscopic data as well as the results of the X-ray analyses of 17a and 19 are consistent with the structures.
    Notes: Die mesomeren Heteropentalen-Betaine vom Typ 4, 7 und 18 reagieren mit den Azodicarbonestern 8a-c ungewöhnlich. So liefert 4 mit 8a, b überraschend 17a, b, während die Umsetzung von 4 mit 8c zu 11 und dem neuen Azomethin-imin 15 führt. Auch die Reaktionen von 18 mit 8a-c ergeben neben dem Azomethinimin 19 noch in zwei Fällen 20 oder 25. Weiterhin reagiert 7 mit 8a zu 26, wogegen die Umsetzung von 7 mit 8c überraschend zu 29 führt. Spektroskopische Daten sowie die Ergebnisse der an 17a und 19 durchgeführten Röntgenstrukturanalyse belegen die Konstitutionen.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19881210115
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