propanol 1 h nmr indicated that 152a and 152d produced 154 1 15 mg 40 and 0 48 mg 47 respectively while 152b and 152c produced 155 3 35 mg 42 and 0 38 mg 40 respectively 154 white solid silica tlc 3 12 2 2 chci 3 1 buoh acoh h 2 o r f 0 48 ninhydrin positive pink ir nacl 2919 2851 1563 1466 1406 758 cm u2212 1 fabms m z 438 286 268 85 70 69 57 55 44 anal calcd for c 18 h 40 no 286 3110 m h found 286 3115 hrfabms 155 white solid silica tlc 3 12 2 2 chci 3 1 buoh acoh h 2 o r f 0 50 ninhydrin positive pink ir naci 3281 2917 2849 1568 1520 1470 1412 cm u2212 1 fabms m z 438 286 268 85 70 69 57 55 44 fig4 anal calcd for c 18 h 40 no 286 3110 m h found 286 3109 hrfabms a portion of fraction b 560 u03bcg dissolved in acetic anhydride 200 u03bcl and pyridine 400 u03bcl and was stirred at 25 u00b0 c for 4 5 h at which time no starting material could be observed by tlc the solvent was removed by a stream.