Adduct-aldehyde and its use for the preparation of vitamin-D com

Details Adduct-aldehyde and its use for the preparation of vitamin-D com Adduct-aldehyde and its use for the preparation of vitamin-D com

1990-06-12

1992-05-05

Shah, Mukund J.

Organic compounds -- part of the class 532-570 series

Organic compounds

Four or more ring nitrogens in the bicyclo ring system

544234, 549 40, 552653, C07D23726, C07D48704, C07D33350

Patent

active

051109247

ABSTRACT:
The invention relates to an adduct-aldehyde of the general formula ##STR1## wherein R is a hydrogen atom or an optionally etherified or esterified hydroxy group,

REFERENCES:
patent: 4539153 (1985-09-01), Vandewalle et al.
patent: 4772433 (1988-09-01), Hesse
Andrews et al., J. Org. Chem., 51, p. 4819 (1986).
"Organic Chemistry", by Hendrickson, Cram, Hammond (3rd Ed.) pp. 508-509 (1970).
Salmond et al., J. Org. Chem., vol. 43, No. 4, 1978, pp. 790-791, A Stereoselective Witting Reagent and its Application . . . .
Kutner et al., Tetrahedron Letters, vol. 28, No. 49, pp. 6129-6132, 1987, Vitamin D C-22 Aldeydes.

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