A stereospecific synthesis of a potential Cl&Cl9 fragment of the novel antineoplastic macrolide amphidinolide-A is described. ## Amphidinolide-A (1) was isolated from dinoflagellate Amphidinium sp. by Kobayashi et. all. This compound has shown in v&-u activity against L1210 (I&j0 2.4 ng/mL) murin
A short and efficient synthesis of the C-3 to C-10 portion of the maytansinoids
โ Scribed by David M. Hodgson; Philip J. Parsons; Peter A. Stones
- Publisher
- Elsevier Science
- Year
- 1991
- Tongue
- French
- Weight
- 829 KB
- Volume
- 47
- Category
- Article
- ISSN
- 0040-4020
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โฆ Synopsis
The cyclic carbamate (3), a key intermediate in our projected synthesis of trenudine (2), has been synthesised from 3,4-epoxycyclohexene (4) by ozonolytic cleavage of the cyclopentene (9) as a key step.
๐ SIMILAR VOLUMES
l-Carbobenzoxy-3-carbomethoxy-5,6-dihydro-4-pyridone (I) has proven to be exceptionally receptive in the conjugate addition of organocuprates to give C-2 substituted piperidones having the C-3 position activated toward alkylation. Enone 1 was used as the key synthon in the synthesis of C-l, C-2 and
The C15-C27 portion of venturicidin X was prepared using substitution reactions of alkyl trifluoromethanesulfonates with a vinylmetal compound followed by homogeneous hydrogenation. Together with our previous synthesis of the C1-C14 portion of venturicidin X, a formal total synthesis of venturicidin