Tetrahedron Letters p. 53 - 56 (1991)
Update date:2022-09-26
Topics:
Maier
Schoffling
The synthesis of the C(10) to C(20) fragment 4 of FK506 from (4S)-4-[(tert-butyldimethylsilyl)-oxymethyl]-4-butanolide (9) is described. A key reaction is the chelation controlled addition of 2-lithio-4-methyl-furan (15b) to aldehyde 8.
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(1990)
