01368nas a2200181   4500008004100000022001400041245011500055210006900170260010600239300001400345490000700359520059900366100002600965700002300991700002601014700001901040856012701059       2008                        eng d  a0040-402000aFacile air-oxidation of N-homopiperonyl-5,6-dimethoxyhomophthalimide: simple and efficient access to nuevamine0 aFacile airoxidation of Nhomopiperonyl56dimethoxyhomophthalimide   aTHE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLANDbPERGAMON-ELSEVIER SCIENCE LTDcFEB  a1786-17910 v643 a<p>A facile six-step synthesis of naturally occurring (+/-)-nuevamine with 55% overall yield has been described, starting from methyl 2-(6-formyl-2,3-dimethoxyphenyl)acetate via the quantitative benzylic air-oxidation of the corresponding N-homopiperonyl-5,6-dimethoxy-homophthalimide to N-homopiperonyl-5,6-dimethoxyisoquinoline-1,3,4-trione as the key reaction, followed by base catalyzed regioselective alcoholysis of the trione with ring contraction, acid catalyzed dehydrative ring closure of the formed lactamol and decarboxylation pathway. (C) 2007 Elsevier Ltd. All rights reserved.</p>1 aWakchaure, Prasad, B.1 aEaswar, Srinivasan1 aPuranik, Vedavati, G.1 aArgade, N., P.  uhttps://library.ncl.res.in/content/facile-air-oxidation-n-homopiperonyl-56-dimethoxyhomophthalimide-simple-and-efficient-000948nas a2200205   4500008004100000022001400041245004900055210004900104260007500153300001400228520023600242653003100478653002300509653003200532653001800564653003400582100002600616700001900642856008100661       2008                        eng d  a0039-788100aFacile biogenetic synthesis of pulcheotine A0 aFacile biogenetic synthesis of pulcheotine A  aRUDIGERSTR 14, D-70469 STUTTGART, GERMANYbGEORG THIEME VERLAG KGcAUG  a2321-23223 a<p>Starting from homopiperonylamine and 4-methoxyphenylacetic acid, a facile biogenetic route to naturally occurring pulcheotine A has been demonstrated via Pictet-Spengler cyclization and two different air oxidation processes.</p>10a4-methoxyphenylacetic acid10ahomopiperonylamine10aPictet-Spengler cyclization10apulcheotine A10aregioselective air oxidations1 aWakchaure, Prasad, B.1 aArgade, N., P.  uhttps://library.ncl.res.in/content/facile-biogenetic-synthesis-pulcheotine-000962nas a2200181   4500008004100000022001400041245006000055210005700115260008000172300001200252490000700264520031500271100002400586700002600610700002600636700002600662856009200688       2009                        eng d  a0971-162700aGreen and sustainable approach to BIS-(INDOLYL) alkanes0 aGreen and sustainable approach to BISINDOLYL alkanes  aC-85 SECTOR-B, ALIGANJ SCHEME, LUCKNOW, INDIA 226020 USAbDR R S VARMAcJAN  a279-2820 v183 a<p>An efficient, high yielding, green and mild method has been developed for the synthesis of bis (indolyl) methanes using dodecylsulphonic acid as an effective surfactant type Bronsted acid catalyst in aq media. The method is excellent for various new bis-(indolyl) methanes derived from pyrazolaldehydes.</p>1 aGholap, Somnath, S.1 aWakchaure, Prasad, B.1 aPandhare, Gajanan, R.1 aGill, Charansingh, H.  uhttps://library.ncl.res.in/content/green-and-sustainable-approach-bis-indolyl-alkanes-001014nas a2200169   4500008004100000022001400041245006200055210005600117260010600173300001200279490000700291520038300298100002600681700002600707700001900733856009200752       2009                        eng d  a0957-416600aStereoselective synthesis of (+)-isoindolo-beta-carboline0 aStereoselective synthesis of isoindolobetacarboline  aTHE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLANDbPERGAMON-ELSEVIER SCIENCE LTDcFEB  a220-2240 v203 a<p>Starting from homophthalic anhydride and (S)-tryptophan, the stereoselective synthesis of (+)-isoindolo-beta-carboline has been described via the corresponding homophthalimide, its chemoselective oxidative ring contraction, and the intramolecular dehydrative ring closure followed by a geometry-specific demethoxycarbonylation. (C) 2009 Elsevier Ltd. All rights reserved.</p>1 aWakchaure, Prasad, B.1 aPuranik, Vedavati, G.1 aArgade, N., P.  uhttps://library.ncl.res.in/content/stereoselective-synthesis-isoindolo-beta-carboline-001630nas a2200217   4500008004100000022001400041245005700055210005700112260007500169300001400244520088800258653001601146653001801162653002701180653002401207653002601231100002601257700002301283700001901306856008701325       2009                        eng d  a0039-788100aSynthesis of the reported protoberberine gusanlung D0 aSynthesis of the reported protoberberine gusanlung D  aRUDIGERSTR 14, D-70469 STUTTGART, GERMANYbGEORG THIEME VERLAG KGcMAY  a1667-16723 a<p>Starting from homopiperonylamine or phenethylamine with homophthalic anhydride or 3,4-methylenedioxyhomophthalic acid, respectively, facile syntheses of the reported structures of (+/-)-gusanlung D and (+/-)-isogusanlung d were accomplished via regioselective reductive dehydration of the corresponding homophthalimides followed by an intramolecular acid-catalyzed or radical cyclization pathway. Starting from the corresponding suitably ortho-halogenated homophthalimides, the syntheses of dehydrogusanlung and dehydroisogusanhing D were completed via regioselective reductive dehydration followed by an intramolecular Heck coupling reaction as the key steps. The analytical and spectral data obtained for all four synthetic compounds differed from the reported data for natural gusanling D, and therefore the structural assignment of the natural product needs to be revised.</p>10agusanlung D10aHeck reaction10ahomophthalic anhydride10ahomopiperonyl amine10areductive dehydration1 aWakchaure, Prasad, B.1 aEaswar, Srinivasan1 aArgade, N., P.  uhttps://library.ncl.res.in/content/synthesis-reported-protoberberine-gusanlung-d-001234nas a2200217   4500008004100000022001400041245013500055210006900190260007500259300001400334520036800348653002900716653001400745653001900759653002700778653001400805653002000819100002600839700001900865856013200884       2011                        eng d  a0039-788100aIntramolecular chemoselective acylation of a suitably substituted isoindole: synthesis of (+/-)-chilenine and (+/-)-deoxychilenine0 aIntramolecular chemoselective acylation of a suitably substitute  aRUDIGERSTR 14, D-70469 STUTTGART, GERMANYbGEORG THIEME VERLAG KGcSEP  a2838-28423 a<p>Starting from 3,4-dimethoxyhomophthalic anhydride and 6-bromohomopiperonylamine, concise and efficient syntheses of Chilean berberis products chilenine and deoxychilenine have been demonstrated via partially divergent routes by taking advantage of facile air-oxidation of homophthalimide along with intramolecular chemoselective acylation as the key steps.</p>10achemoselective acylation10achilenine10adeoxychilenine10ahomophthalic anhydride10aisoindole10aTotal synthesis1 aWakchaure, Prasad, B.1 aArgade, N., P.  uhttps://library.ncl.res.in/content/intramolecular-chemoselective-acylation-suitably-substituted-isoindole-synthesis-chilenine-001447nas a2200253   4500008004100000022001400041245015200055210006900207260010300276300001200379490000700391520042600398653003100824653004400855653001700899653002200916653001400938653003000952653001400982100002600996700002201022700001901044856013001063       2011                        eng d  a0376-469900aRegioselective NaBH4 and DIBAL-H reductions of 3,4-dimethoxyhomopiperonylphthalimide: concise and efficient synthesis of nuevamine and isonuevamine0 aRegioselective NaBH4 and DIBALH reductions of 34dimethoxyhomopip  aANUSANDHAN BHAWAN, 2 RAFI MARG, NEW DELHI, 110001, INDIAbCOUNCIL SCIENTIFIC & INDUSTRIAL REScJUN  a868-8710 v503 a<p>Facile synthesis of nuevamine and isonuevamine has been reported via the regioselectivc reduction of hindered and unhindered carbonyl groups of 3,4-dimethoxyhomopiperonylphthalimide, respectively using sodium borohydridc and diisobutylaluminum hydride, Mowed by an acid catalyzed intramolecular dehydrative cyclization pathways. The chemistry involved in obtaining the regioselectivity has been discussed in brief.</p>10a6-dimethoxyhomophthalimide10aintramolecular dehydrative cyclizations10aisonuevamine10aN-Homopiperonyl-510anuevamine10aregioselective reductions10asynthesis1 aWakchaure, Prasad, B.1 aKunte, Sunita, S.1 aArgade, N., P.  uhttps://library.ncl.res.in/content/regioselective-nabh4-and-dibal-h-reductions-34-dimethoxyhomopiperonylphthalimide-concise-0