A new and short enantioselective synthesis of (R)-pantolactone
摘要:
Dihydro-4,4-dimethyl-2(3H)-furanone 6, the key intermediate to (R)-pantolactone 2, has been synthesized in two steps via the radical cyclization of bromoether 5. Silyl enol ether 7, prepared from 6, on Sharpless asymmetric dihydroxylation gave (R)-pantolactone 2 in moderate yield and excellent enantioselectivity. (C) 1999 Elsevier Science Ltd. All rights reserved.
A new and short enantioselective synthesis of (R)-pantolactone
摘要:
Dihydro-4,4-dimethyl-2(3H)-furanone 6, the key intermediate to (R)-pantolactone 2, has been synthesized in two steps via the radical cyclization of bromoether 5. Silyl enol ether 7, prepared from 6, on Sharpless asymmetric dihydroxylation gave (R)-pantolactone 2 in moderate yield and excellent enantioselectivity. (C) 1999 Elsevier Science Ltd. All rights reserved.
A new and short enantioselective synthesis of (R)-pantolactone
作者:T.T. Upadhya、S. Gurunath、A. Sudalai
DOI:10.1016/s0957-4166(99)00302-x
日期:1999.7
Dihydro-4,4-dimethyl-2(3H)-furanone 6, the key intermediate to (R)-pantolactone 2, has been synthesized in two steps via the radical cyclization of bromoether 5. Silyl enol ether 7, prepared from 6, on Sharpless asymmetric dihydroxylation gave (R)-pantolactone 2 in moderate yield and excellent enantioselectivity. (C) 1999 Elsevier Science Ltd. All rights reserved.