Detail of "570-74-1"

Reference

(20R)- and (20S)-Cholest-5-ene-3

(20R)- and (20S)-Cholest-5-ene-3.beta.,21-diol. Byon, Chang-Yon; Buyuktur, Guniz; Choay, Patrick; Gut, Marcel (Worcester Found. Exp. Biol., Shrewsbury, Mass., USA). J. Org. Chem., 42(22), 3619-21 (English) 1977. CODEN: JOCEAH. DOCUMENT TYPE: Journal CA Section: 32 (Steroids) The Wittig reaction of norcholestenone I [R = tetrahydropyran-2-yl (R1), X = O] and Ph3P:CH2 with subsequent hydrolysis of the resulting I (R = R1, X = CH2) (II) gave I (R = H, X = CH2) (III). Similarly, I (R = H, X = O) yielded III. The hydroboratioin of II gave (20R)- and (20S)-cholest-5-ene-3.beta.,21-diols in 2:1 ratio.

(25R)-Cholest-5-ene-3

(25R)-Cholest-5-ene-3.beta.,26-diol. Kirfel, A.; Will, G.; Brennecke, R.; Tschesche, R. (Mineral. Inst., Univ. Bonn, Bonn, Ger.). Acta Crystallogr.There are some reagents like 20380-11-4 is used in this study., Sect. B, B33(3), 895-7 (English) 1977. CODEN: ACBCAR. DOCUMENT TYPE: Journal CA Section: 75 (Crystallization and Crystal Structure) Section cross-reference(s): 32 The structure of the title compd. was detd. by x-ray diffraction. The compd. is orthorhombic, space group P212121, with a 19.182(3), b 22.062(5), and c 11.605(3) .ANG.; d.(calcd.) = 1.089 for Z = 8. The configuration at C(25) is (25R). The crystal is built up of mols. connected by H bonds, forming infinite chains along a. .