Highly diastereoselective nucleophilic additions using a novel myrtenal-derived oxathiane as a chiral auxiliary
摘要:
The synthesis of novel oxathiane 3 and its acetyl derivative 12, from commercially available (-)myrtenal 4, is described. The addition of several nucleophilic reagents to 12 furnished the corresponding tertiary carbinols in highly diastereomeric excess. The hydrolysis of 11a, b yielded the expected alpha-hydroxycarbonyl compounds in excellent enantiomeric excess. (C) 2002 Elsevier Science Ltd. All rights reserved.
Highly diastereoselective nucleophilic additions using a novel myrtenal-derived oxathiane as a chiral auxiliary
摘要:
The synthesis of novel oxathiane 3 and its acetyl derivative 12, from commercially available (-)myrtenal 4, is described. The addition of several nucleophilic reagents to 12 furnished the corresponding tertiary carbinols in highly diastereomeric excess. The hydrolysis of 11a, b yielded the expected alpha-hydroxycarbonyl compounds in excellent enantiomeric excess. (C) 2002 Elsevier Science Ltd. All rights reserved.