ORGANIC LETTERS 2005 Vol. 7, No. 23 5347-5348
Additions and Corrections
Volume 7, 2005
Volume 7, 2005
Christian V. Stevens,* Nicolai Dieltiens, and Diederica D. Claeys
Amit K. Mandal, John S. Schneekloth, Jr., and Craig M. Crews*
Straightforward Ring Expansion of Pyroglutamates to Perhydro-1,3-diazepine-2,4-diones.
Stereoselective Assembly of a 1,3-Diene via Coupling between an Allenic Acetate and a (B)-Alkylborane: Synthetic Studies on Amphidinolide B1.
Page 1117. The incorrect product was reported in this paper. X-ray analysis after publication shows that the products are not perhydro-1,3-diazepine-2,4-diones, but are hydantoins which were formed by a ring-closing-ringopening sequence and which have almost identical NMR spectra. A paper is in preparation stating this misinterpretation and proving the structure of the hydantoins by X-ray analysis.
Page 3646. In Scheme 2, the positioning of TBSO is incorrect for compound 10 and fragment 2. The correct version of Scheme 2 is below:
Scheme 2.
Retrosynthetic Analysis
OL052428E 10.1021/ol052428e Published on Web 10/14/2005
OL052513M 10.1021/ol052513m Published on Web 10/21/2005
Volume 5, 2005
Ya-Ching Shen,* Yu-Chi Lin, Michael Y. Chiang, Sheau Farn Yeh, Yuan-Bin Cheng, and Chia-Ching Liao Kadsuphilactones A and B, Two Novel Triterpene Dilactones from Kadsura philippinensis. Page 3310. Some of the transformations shown in the last three steps of Scheme 1 are incorrect. The corrected version is shown below.
Scheme 1.
Plausible Biogenetic Relationships for Compounds 1-4
Page 3310, Paragraph 2. The sentence beginning “This pathway ...” should read as follows: “This pathway involves Baeyer-Villiger oxidation, hydrolysis, Michael addition, epoxidation, hydrolysis, and finally an unknown step of C-C bond cleavage with ring expansion.” OL052226I 10.1021/ol052226i Published on Web 10/21/2005
