745818-78-4Relevant articles and documents
Towards the total synthesis of calyculin C: Preparation of the C 9-C25 spiroketal-dipropionate unit
Habrant, Damien,Koskinen, Ari M. P.
experimental part, p. 4364 - 4373 (2010/11/05)
An asymmetric synthesis of the C9-C25 spiroketal fragment of calyculin C is described. Key steps include two crotylation reactions using successively BrowN′s reagent and (Z)-crotyltrifluorosilane for the formation of the anti, anti, anti stereotetrad, ynone formation by a Pd-catalyzed coupling of a thiol ester with a terminal alkyne and a double intramolecular hetero-Michael addition for the stereoselective construction of the spiroketal framework.
Studies towards the synthesis of the C(9)-C(20) lactone-dipropionate fragment of calyculin C
Karisalmi, Kaisa,Koskinen, Ari M. P.
, p. 1331 - 1342 (2007/10/03)
In this paper we describe the synthesis of a diastereomer of the C(9)-C(20) dipropionate-lactone fragment of Calyculin C. A short and enantioselective synthesis of the key intermediate 2 has been developed. This intermediate will play a critical role also