Asymmetric syn-dihydroxylation of γ-substituted (2R)-N-(β,γ-enoyl)bornane-10,2-sultams
摘要:
Various gamma-substituted (2R)-N-( beta,gamma-enoyl)bornane-10,2-sultams have been examined in diastereoselective OsO4 syn-dihydroxylation. In contrast to the C(alpha)-atom, the bornane-10,2-sultam auxiliary exerts a very poor influence on the C(beta)-carbon. Spontaneous stereoselective hydrolysis of the minor diastereoisomer (3S,4S)-5c opens the way to enantiomerically pure building blocks, (C) 2000 Elsevier Science Ltd. All rights reserved.
Asymmetric syn-dihydroxylation of γ-substituted (2R)-N-(β,γ-enoyl)bornane-10,2-sultams
摘要:
Various gamma-substituted (2R)-N-( beta,gamma-enoyl)bornane-10,2-sultams have been examined in diastereoselective OsO4 syn-dihydroxylation. In contrast to the C(alpha)-atom, the bornane-10,2-sultam auxiliary exerts a very poor influence on the C(beta)-carbon. Spontaneous stereoselective hydrolysis of the minor diastereoisomer (3S,4S)-5c opens the way to enantiomerically pure building blocks, (C) 2000 Elsevier Science Ltd. All rights reserved.
Various gamma-substituted (2R)-N-( beta,gamma-enoyl)bornane-10,2-sultams have been examined in diastereoselective OsO4 syn-dihydroxylation. In contrast to the C(alpha)-atom, the bornane-10,2-sultam auxiliary exerts a very poor influence on the C(beta)-carbon. Spontaneous stereoselective hydrolysis of the minor diastereoisomer (3S,4S)-5c opens the way to enantiomerically pure building blocks, (C) 2000 Elsevier Science Ltd. All rights reserved.