Preparation of Fortamine and 6-epi-Purpurosamine B from Fortimicin B

Diastereomeric fortimicin 1,2-epoxides. The preparation of the 1-deamino-2-deoxyfortimicins A and B and the 1,2-di-epi-fortimicins A and B.

The preparation of 1,2-anhydro-2',6'-di-N-benzyloxycarbonyl-1-deaminofortimicin B-4,5-carbamate (4) and its conversion to the two diastereomeric 2',6'-di-N-benzyloxycarbonyl-1-deamino-2-deoxy-1,2-epoxyfortimicin B-4,5-carbamates 7 and 13 are described. The olefin 4 was used for preparation of 1-deamino-2-deoxyfortimicin A (6d) while the beta-epoxide 13 was used for the preparation of 1,2-di-epi...

Total synthesis of hyacinthacines B₃, B₄, and B₅ and purported hyacinthacine B₇, 7-epi-hyacinthacine B₇, and 7a-epi-hyacinthacine B₃ from a common precursor.

The total synthesis of hyacinthacines B3, B4, and B5 and purported hyacinthacine B7, 7-epi-hyacinthacine B7, and 7a-epi-hyacinthacine B3 from a common anti-1,2-amino alcohol precursor is described. These syntheses confirmed that the proposed structures and absolute configurations of hyacinthacines B3, B4, and B5 were correct and disclosed that the proposed structure of hyacinthacine B7 was inco...

Tetraphyllin B and epi-tetraphyllin B from Adenia glauca Schinz.

SPENCER, K. C. & SEIGLER, D. S., 1982. Tetraphyllin Band epi-tetraphyllin B from Adenia glauca Schinz. Onderstepoort Journal of Veterinary Research, 49, 137-138 (1982). Tetraphyllin Band epi-tetraphyllin B have been isolated from the South African plant Adenia glauca Schinz in an approximate ratio of 5: I. The structures were established by 'H-NMR.

The preparation and properties of B,B',B"-trichlorotriethylamine and B,B'-dichlorodiethylamine

the investigation of the relationship between type a and type b personalities and quality of translation

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