1979
DOI: 10.1002/ange.19790911009
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Enzymatische Bildung von Uroporphyrinogen I und III aus einem substituierten Bilan

Abstract: Der „umgedrehte Ring”︁ in Uroporphyrinogen III (Uro'gen III), der Stammverbindung aller natürlichen Porphyrine etc., könnte auf zwei Wegen zustandekommen: 1. durch Isomerisierung eines Kopf‐Schwanz‐verknüpften Bilans wie (1) beim Ringschluß oder 2. durch Bildung einer Vorstufe mit „umgedrehtem”︁ Ring. Nach neuen enzymatischen Studien wird der erste Weg beschritten. magnified image

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“…The fractions containing the bilane (bromine vapor was used for visualization) were combined and evaporated to dryness: 18 mg (12%); mass spectrum,21 m/e (21) See ref 4 for the fragmentation pattern of this type of bilane. (relative intensity) 933, (M+, 16), 475 (100), 471 (40), 462 (60), 459 (compound 19, 53), 222 (50); NMR 5 2.79 (br, 12 H, CHjCHjCOa), 3.09 (br, 4 H, CH2CH2CONH), 3.46,3.52,3.55, 3.66 (4 s, 29 H, CH2, OCHg), 3.70 (m, 6 H, pyrr-CH2-pyrr), 4.17 (m, 2 H, CH2NH), 6.21 (br, 1 H, NHCO), 6.37 (br, 1 , H-l'), 8.65, 8.89,8.91 (2 s, 3 , NH). The bilane 27 was pure when examined by TLC (4% methanol in chloroform).…”
Section: Methodsmentioning
confidence: 99%
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“…The fractions containing the bilane (bromine vapor was used for visualization) were combined and evaporated to dryness: 18 mg (12%); mass spectrum,21 m/e (21) See ref 4 for the fragmentation pattern of this type of bilane. (relative intensity) 933, (M+, 16), 475 (100), 471 (40), 462 (60), 459 (compound 19, 53), 222 (50); NMR 5 2.79 (br, 12 H, CHjCHjCOa), 3.09 (br, 4 H, CH2CH2CONH), 3.46,3.52,3.55, 3.66 (4 s, 29 H, CH2, OCHg), 3.70 (m, 6 H, pyrr-CH2-pyrr), 4.17 (m, 2 H, CH2NH), 6.21 (br, 1 H, NHCO), 6.37 (br, 1 , H-l'), 8.65, 8.89,8.91 (2 s, 3 , NH). The bilane 27 was pure when examined by TLC (4% methanol in chloroform).…”
Section: Methodsmentioning
confidence: 99%
“…It was prepared following the procedure described for 27. The condensation of 84 mg of the aldehyde 18 and 60 mg of the dipyrrylmethane lactam 2018 gave 10 mg (15%) of the bilane lactam 28: mass spectrum (TOF), m/e 933 (M+); mass spectrum, m/e (relative intensity) 933 (M+, 25), 475 (100), 471 (30), 459 (compound 20,63), 222 (60); NMR 2.79 (br, 12 H, CH2CH2CO), 3.05 (br, 4 H, CH2CH2CONH), 3.43,3.52, 3.63 (br s, 35 H, CH2C02, OCHg), 3.69 (m, 6 H, pyrr-CH2-pyrr), 4.18 (m, 2 H, CH2NH), 6.13 (br, 1 H, NHCO), 6.36 (br, 1 , H-l').…”
Section: Methodsmentioning
confidence: 99%
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