Synthesis of the proposed structure and revision of stereochemistry of kaitocephalin
摘要:
A stereoselective total synthesis of the proposed structure of kaitocephalin (1) was accomplished starting from L-proline and D- and L-serines. How ever, its H-1 NMR spectral data and retention time oil HPLC were not identical with those of authentic natural kaitocephalin. The revised stereochemistry of natural kaitocephalin. (2R)-isomer (16), was inferred from further experiments employing diastereomers and model compounds. (C) 2002 Elsevier Science Ltd. All rights reserved.
Synthesis of the proposed structure and revision of stereochemistry of kaitocephalin
摘要:
A stereoselective total synthesis of the proposed structure of kaitocephalin (1) was accomplished starting from L-proline and D- and L-serines. How ever, its H-1 NMR spectral data and retention time oil HPLC were not identical with those of authentic natural kaitocephalin. The revised stereochemistry of natural kaitocephalin. (2R)-isomer (16), was inferred from further experiments employing diastereomers and model compounds. (C) 2002 Elsevier Science Ltd. All rights reserved.