シクロビロブキシンD

プロパティ

安全情報

説明

A Buxus alkaloid of the steroidal class, this base has been found in the strong base fraction of the alkaloidal extract from Buxus microphylla Sieb. et Zucco var. suffruticosa and B. microphylla Sieb. et Zucco var. suffruticosa Makino forma major. It is dextrorotatory having a specific rotation of [α]²³_D + 98° (c 4.40,CHC13)and yields a series of salts and derivatives including the dihydrobromide, m.p. 288-292°C (dec.); dihydriodide, m.p. 276-8°C (dec.); diperchlorate, m.p. 244- 5°C (dec.); dioxalate as an amorphous powder, m.p. 264-7°C (dec.): the N:Ndiacetyl derivative, m.p. 278-281°C (dec.) with [α]²⁴_D + 10° (c 1.94, CHC13) and the O,N,N-triacetyl derivative, m.p. 246-8°C with [α]²⁴_D - 12° (c 2.40, CHCI3)·
The structure and stereochemistry of the base have been elucidated from chemical analysis, spectroscopic evidence and comparison with other alkaloids of this class.