A four-step synthesis of the ardeemin framework by starting from N-2-aminobenzoyl-alpha-amino esters is described. In the last step, the acid promoted cyclization of the 1,4-anti-4-alkyl-1-(3-indolylmethyl)-2,4-dihydro-1H-pyrazino[2,1-h]quinazoline-3,6-diones occurs irreversible and stereocontrolled. (C) 2003 Elsevier Science Ltd. All rights reserved.
A four-step synthesis of the ardeemin framework by starting from N-2-aminobenzoyl-alpha-amino esters is described. In the last step, the acid promoted cyclization of the 1,4-anti-4-alkyl-1-(3-indolylmethyl)-2,4-dihydro-1H-pyrazino[2,1-h]quinazoline-3,6-diones occurs irreversible and stereocontrolled. (C) 2003 Elsevier Science Ltd. All rights reserved.
Actions of Tryptophan Prenyltransferases Toward Fumiquinazolines and their Potential Application for the Generation of Prenylated Derivatives by Combining Chemical and Chemoenzymatic Syntheses
作者:Peter Mai、Georg Zocher、Lena Ludwig、Thilo Stehle、Shu-Ming Li
DOI:10.1002/adsc.201600064
日期:2016.5.19
different features of these enzymes toward ardeemin FQ analogues, regarding activity and prenylation position. Isolation and structural elucidation showed that 7‐DMATS catalyzed mainly regiospecific prenylation at C‐7, which is also observed for its natural substrate L‐tryptophan. Up to four prenylated derivatives were identified in the reaction mixtures of other enzymes. In total, 18 new prenylated
A four-step synthesis of the ardeemin framework by starting from N-2-aminobenzoyl-alpha-amino esters is described. In the last step, the acid promoted cyclization of the 1,4-anti-4-alkyl-1-(3-indolylmethyl)-2,4-dihydro-1H-pyrazino[2,1-h]quinazoline-3,6-diones occurs irreversible and stereocontrolled. (C) 2003 Elsevier Science Ltd. All rights reserved.