摘要:
A novel process for the preparation of (1S,4R)- or (1R,4S)-4-(2-amino-6-chloro-9H-purin-9-yl)-2-cyclopentene-1-methanol of the formulae ##STR1## is described. This entails in the first stage (.+-.)-2-azabicyclo[2.2.1]hept-5-en-3-one of the formula ##STR2## being acylated to give a (.+-.)-2-azabicyclo[2.2.1]hept-5-en-3-one derivative of the general formula ##STR3## in which R.sup.1 denotes C.sub.1-4 -alkyl, C.sub.1-4 -alkoxy, aryl or aryloxy, the latter being reduced in the second stage to give a cyclopentene derivative of the general formula ##STR4## in which R.sup.1 has the stated meaning, the latter then being converted in the third stage biotechnologically into the (1R,4S)- or (1S,4R)-1-amino-4-(hydroxymethyl)-2-cyclopentene of the formula ##STR5## the latter being converted in the fourth stage with N-(2-amino-4,6-dichloro-5-pyrimidinyl)formamide of the formula ##STR6## into the (1S,4R)- or (1R,4S)-4-[(2-amino-6-chloro-5-formamido-4-pyrimidinyl)amino]-2-cyclopentene-1-methanol of the formulae ##STR7## and the latter being cyclized in the fifth stage in a known manner to the final product of the formula I or II.
摘要:
The invention relates to a novel process for the preparation of (1R,4S)- or (1S,4R)-1-amino-4-(hydroxy-methyl)-2-cyclopentene of the formulae and/or of (1S,4R)- or (1R,4S)-amino alcohol derivatives of the general formulae and to novel microorganisms which are able to utilize a cyclopentene derivative of the general formula as sole nitrogen source, as sole carbon source or as sole carbon and nitrogen source.
摘要:
A novel process for the preparation of (1S, 4R)- or (1R, 4S)-4-(2-amino-6-chloro-9H-purin-9-yl)-2 -cyclopentene-1-methanol of the formula is described.
摘要:
A novel process for the preparation of (1S,4R)- or (1R,4S)-4-(2-amino-6-chloro-9H-purin-9-yl)-2-cyclo-pentene-1-methanol of the formulae ##STR1## is described. This entails in the first stage (.+-.)-2-aza-bicyclo[2.2.1]hept-5-en-3-one of the formula ##STR2## being acylated to give a (.+-.)-2-azabicyclo[2.2.1]hept-5-en-3-one derivative of the general formula ##STR3## in which R.sup.1 denotes C.sub.1-4 -alkyl, C.sub.1-4 -alkoxy, aryl or aryloxy, the latter being reduced in the second stage to give a cyclopentene derivative of the general formula ##STR4## in which R.sup.1 has the stated meaning, the latter then being converted in the third stage biotechnologically into the (1R,4S)- or (1S,4R)-1-amino-4-(hydroxymethyl)-2-cyclopentene of the formula ##STR5## the latter being converted in the fourth stage with N-(2-amino-4,6-dichloro-5-pyrimidinyl)formamide of the formula ##STR6## into the (1S,4R)- or (1R,4S)-4-[(2-amino-6-chloro-5-formamido-4-pyrimidinyl)amino]-2-cyclopentene-1-methanol of the formulae ##STR7## and the latter being cyclized in the fifth stage in a known manner to the final product of the formula I or II.
摘要:
The invention relates to a novel process for the preparation of (1R,4S)- or (1S,4R)-1-amino-4-(hydroxymethyl)-2-cyclopentene of the formulae and/or of (1S,4R)- or (1R,4S)-amino alcohol derivatives of the general formulae and to novel microorganisms which are able to utilize a cyclopentene derivative of the general formula as sole nitrogen source, as sole carbon source or as sole carbon and nitrogen source. The invention further relates to enzyme extracts and enzymes having N-acetylamino-alcohol hydrolase activity obtainable from these microorganisms.
摘要:
A process for the preparation of a racemic or optically active compound of the formula where the group R1 is an unsubstituted or a halogen substituted C1-4-alkyl, a C1-4-alkoxy, an aryl, an arylalkyl, an aryloxy, or arylalkylloxy.
摘要:
The invention relates to a novel process for the preparation of (1R,4S)- or (1S,4R)-1-amino-4-(hydroxymethyl)-2-cyclopentene of the formulae and/or of (1S,4R)- or (1R,4S)-amino alcohol derivatives of the general formulae and to novel microorganisms which are able to utilize a cyclopentene derivative of the general formula as sole nitrogen source, as sole carbon source or as sole carbon and nitrogen source.
摘要:
A biotechnological method is described for preparing compounds of the general formulas wherein R1 is acyl or acyloxy and R2 is a hydrogen atom or C1-10 alkyl, comprising the conversion of a lactam of the general formula by means of a hydrolase in the presence of a nucleophile and in the presence of a base in a constant pH range. Also described is the subsequent conversion of the compound of general formula I into the optically active 1-amino-4-(hydroxymethyl)-2-cyclopentene of the formula