All articles by Leif Grehn

11 articles

Articles in volume 40b (1986)

Structure-Activity Relationships in Distamycin A Analogues: Effect of Alkyl Groups on the Pyrrole Nitrogen at the Non-amidine End of the Molecule Combined with Methyl Elimination in the Following Ring.

Grehn, Leif; Ragnarsson, Ulf; Datema, Roelf

Pages: 145-151.

DOI number: 10.3891/acta.chem.scand.40b-0145
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A Simple Method for tert-Butoxycarbonylation of Amides.

Grehn, Leif; Gunnarsson, Kerstin; Ragnarsson, Ulf

Pages: 745-750.

DOI number: 10.3891/acta.chem.scand.40b-0745
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Articles in volume 41b (1987)

Selective Cleavage of Boc-acylamides. A Novel Approach to Deacylation of Carboxamides.

Grehn, Leif; Gunnarsson, Kerstin; Ragnarsson, Ulf

Pages: 18-23.

DOI number: 10.3891/acta.chem.scand.41b-0018
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Articles in volume 43 (1989)

Facile Synthesis of Monoacetylated Spermidines, Illustrating Selective Deacetylation and Application of a Common Precursor.

Almeida, M. Lurdes S.; Grehn, Leif; Ragnarsson, Ulf

Pages: 990-994.

DOI number: 10.3891/acta.chem.scand.43-0990
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Articles in volume 44 (1990)

The Preparation and Properties of Partially Protected 4-Amino-1-methylimidazole-2-carboxylic Acids to be Used as Intermediates in the Synthesis of Analogues of Distamycin A.

Grehn, Leif; Ding, Lu; Ragnarsson, Ulf

Pages: 67-74.

DOI number: 10.3891/acta.chem.scand.44-0067
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The Preparation of Partially Protected 3-Amino-1-methylpyrazole-5-carboxylic Acids to be Used as Intermediates in the Synthesis of Analogues of Distamycin A.

Ding, Lu; Grehn, Leif; Ragnarsson, Ulf

Pages: 75-81.

DOI number: 10.3891/acta.chem.scand.44-0075
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Articles in volume 47 (1993)

Synthesis, Properties and Use of Nitridotricarbonic Acid Tri-tert-Butyl Ester.

Degerbeck, Fredrik; Grehn, Leif; Ragnarsson, Ulf

Pages: 896-898.

DOI number: 10.3891/acta.chem.scand.47-0896
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Synthesis and Spectroscopic Properties of 13C- and 15N-Labelled tert-Butoxycarbonylglycines.

Grehn, Leif; Pehk, Tönis; Ragnarsson, Ulf

Pages: 1107-1111.

DOI number: 10.3891/acta.chem.scand.47-1107
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Articles in volume 48 (1994)

Synthesis and Antiviral Activity of Three Pyrazole Analogues of Distamycin A.

Ding, Lu; Grehn, Leif; De Clercq, Erik; Andrei, Graciela; Snoeck, Robert; Balzarini, Jan; Fransson, Bengt; Ragnarsson, Ulf

Pages: 498-505.

DOI number: 10.3891/acta.chem.scand.48-0498
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Articles in volume 49 (1995)

Synthesis of 15N-Labelled Leu-Enkephalins.

Degerbeck, Fredrik; Fransson, Bengt; Grehn, Leif; Ragnarsson, Ulf

Pages: 149-151.

DOI number: 10.3891/acta.chem.scand.49-0149
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Articles in volume 52 (1998)

Chemoselective Substitution in 4-Toluenesulfonamides and Carbamates by Di-tert-butyl Dicarbonate in the Presence of 4-Dimethylaminopyridine.

Grehn, Leif; Ragnarsson, Ulf

Pages: 627-630.

DOI number: 10.3891/acta.chem.scand.52-0627
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